3
301 Redirect
A 301 redirect is a permanent redirect that sends visitors and search engines from an old URL to a new one, passing along most of the old page's ranking signals.
301s are essential during redesigns, domain changes and page consolidation; skipping them is one of the most common ways businesses lose search traffic overnight. Each old URL should point to its closest new equivalent, not just the homepage. A firm moving from /services/tax-prep.html to /tax-preparation/ should 301 the old address directly to the new one.
A
Accessibility Overlay
An accessibility overlay is a third-party script or widget added to a website that claims to automatically detect and fix accessibility problems.
Overlays cannot fix most underlying code issues and do not by themselves make a site WCAG conformant; the FTC took action in 2025 against one overlay vendor over its compliance claims. Lawsuits have been filed against sites using them. A business that wants real accessibility should fix the site's code and content, test with real assistive technology, and treat any widget as optional.
ADA Title II Web Rule
The ADA Title II web rule is a Department of Justice regulation requiring state and local governments' websites and mobile apps to meet WCAG 2.1 Level AA.
It applies to public entities such as cities, counties, school districts, public universities and transit agencies, not private businesses, which fall under Title III. In 2026 the DOJ extended compliance dates to April 26, 2027 for entities serving 50,000 or more people and April 26, 2028 for smaller ones. A village with a population of 8,000 has until 2028 but should be fixing its site and documents now.
Read: What does the ADA Title II web rule mean for public entities?
Agent Experience Optimization (AXO)
Agent experience optimization is making a website easy for AI agents to read, understand and act on, through clean structure, agent-friendly content formats and clear task-specific definitions.
As assistants start booking, comparing and buying on a person's behalf, a site has to work for software as well as people. That means plain HTML that loads without heavy scripts, labeled forms, structured data, stated prices and policies, and pages that define each task clearly. A salon whose services, prices and booking steps are spelled out in readable text gives an agent a real chance to book an appointment instead of giving up.
Read: What makes a website AI-friendly?
AI Agent Structured Data Generative Engine Optimization (GEO)
AI Agent
An AI agent is software that acts on a person's behalf, such as browsing websites, comparing options, filling forms, booking appointments or making purchases, rather than only answering questions.
Agents raise the bar for websites: if an agent cannot find your hours, read your pricing or complete your form, it moves on to a competitor whose site it can use. Agent features from major AI companies are still early and change often, so treat them as an emerging channel. A traveler might ask an agent to find and reserve a dog-friendly cabin in the Northwoods for a set budget.
Read: What makes a website AI-friendly?
Agent Experience Optimization (AXO) Large Language Model (LLM) AI Crawler
AI Crawler
An AI crawler is a bot run by an AI company that fetches web pages to train models, power AI search answers, or retrieve a page a user requested.
Not all AI crawlers do the same job, so blocking them all can cost you visibility in AI answers. OpenAI, Anthropic, Google, Perplexity and others publish separate bot names for training, search and user-requested fetches. A business that wants to show up in ChatGPT search but opt out of model training can allow the search bot and disallow the training bot.
Read: Which AI crawlers visit websites, and what do they do?
AI Hallucination
An AI hallucination is when an assistant states something false or invented with confidence, such as wrong hours, a fake service or a review that does not exist.
Hallucinations about businesses usually come from thin, outdated or conflicting information online. You cannot edit a model directly, but you can make correct facts consistent and easy to find so grounded answers improve. A contractor that ChatGPT says offers pool installation, which it never has, should clarify services on its site and profiles.
Read: Why does AI give wrong information about my business, and how do I fix it?
AI Referral Traffic
AI referral traffic is website visits that come from people clicking links inside AI assistants such as ChatGPT, Perplexity, Gemini, Copilot and Claude.
It shows up in analytics as referrals from domains like chatgpt.com or perplexity.ai, though some AI visits arrive without referrer data and look like direct traffic. Volumes are often small but visitors can be unusually ready to act. A software company can build a GA4 report filtering those referrers to see which pages AI sends people to.
Read: How do I track website traffic from ChatGPT and other AI tools?
Answer Engine Optimization (AEO)
Answer engine optimization is structuring content so search engines and AI assistants can lift it as a direct answer to a specific question, rather than just listing a link.
AEO grew out of featured snippets and voice search and now overlaps heavily with GEO. In practice it means leading with a clear answer, using question-style headings and marking up content with structured data. A clinic that opens its insurance page with a plain two-sentence answer to "Do you take Medicare?" is doing AEO.
Read: What is answer engine optimization (AEO)?
Generative Engine Optimization (GEO) Zero-Click Search Structured Data
Apple Business Connect
Apple Business Connect is Apple's free tool for businesses to claim and manage how they appear in Apple Maps, Siri, Wallet and other Apple apps.
Many iPhone users search and navigate with Apple Maps by default, and Apple's place data can feed other experiences on the device. Claiming your place lets you control hours, photos and actions like ordering or booking. A coffee shop with heavy foot traffic from iPhone users should claim its listing as it would with Google.
B
Backlink
A backlink is a link from another website to yours, which search engines treat as a signal of relevance and trust, especially when it comes from a respected, related site.
Backlinks still matter for Google and Bing, and the sites that link to you also tend to be the sources AI systems read. Quality and relevance beat volume; bought or spammy links can hurt. A craft distillery earning a link from a regional food magazine's feature is worth more than dozens of links from unrelated directories.
Bing Webmaster Tools
Bing Webmaster Tools is Microsoft's free dashboard for site owners to see how Bing crawls, indexes and ranks their site, submit sitemaps and diagnose problems.
It is often overlooked, but Bing's index matters well beyond Bing.com because it supports Microsoft Copilot and is used by other search and AI tools. It also supports IndexNow submissions. A professional services firm can import its verified site from Google Search Console in a few minutes and start seeing Bing data.
Branded Search
Branded search is when people search for your business by name, alone or with words like reviews, hours or pricing, rather than for a generic product or service.
Growth in branded search is one of the clearest signs that marketing, word of mouth and AI mentions are working, since people heard of you somewhere. It is also where you should own the results page fully. If a podcast appearance leads to a jump in searches for your firm's name, Google Search Console will show it.
C
Canonical Tag
A canonical tag is a line of HTML telling search engines which URL is the preferred version when the same or similar content exists at several URLs.
Canonicals consolidate signals onto one URL and prevent duplicate versions from competing with each other. Search engines treat them as a strong hint, not a command. A product available at both a category path and a sale path should point both to one canonical URL.
Citation
Citation has two meanings: in local SEO, any online mention of a business's name, address and phone; in AI search, a source an AI answer links to or credits.
Local citations on directories, chambers and data aggregators help confirm a business exists and where it is. AI citations are the links or source cards an assistant like Perplexity or Google AI Overviews shows next to its answer, and earning them puts your brand in front of buyers at the moment of decision. A boutique hotel might have strong local citations on travel sites and also be cited when Perplexity answers "quiet hotels near the lakefront."
Conversion Tracking
Conversion tracking is measuring the valuable actions people take after interacting with marketing, such as purchases, calls, form fills or bookings, and attributing them to sources.
Without it, ad platforms optimize for clicks rather than customers and you cannot tell which spending works. Accurate tracking increasingly relies on server-side tagging, enhanced conversions and consent-aware setups. A home builder that tracks only form fills but gets most leads by phone should add call tracking to see its real results.
Core Web Vitals
Core Web Vitals are Google's three user experience metrics: Largest Contentful Paint for loading, Interaction to Next Paint for responsiveness, and Cumulative Layout Shift for visual stability.
Google's good thresholds are LCP of 2.5 seconds or less, INP of 200 milliseconds or less, and CLS of 0.1 or less, measured at the 75th percentile of real visits. INP replaced First Input Delay in March 2024. They are a modest ranking factor, but slow, jumpy pages lose customers regardless; a restaurant whose menu page shifts as images load frustrates every phone visitor.
CPA (Cost per Acquisition)
CPA, or cost per acquisition, is the ad or marketing spend required to win one customer or complete one target action, such as a purchase or signed contract.
CPA connects spend to real business outcomes better than clicks or leads, and it is what you compare against customer value. Ad platforms also use target CPA as an automated bidding goal. If a customer is worth $1,500 over a year, a $200 CPA is healthy; a $1,800 CPA is not.
Read: How do I measure marketing ROI?
CPL (Cost per Lead) ROAS (Return on Ad Spend) Conversion Tracking
CPC (Cost per Click)
CPC, or cost per click, is the amount an advertiser pays each time someone clicks an ad, set through an auction on platforms like Google Ads and Microsoft Ads.
CPC varies enormously by industry and location, from cents to well over a hundred dollars for competitive legal or insurance terms. Lower CPC is not automatically better; what matters is what those clicks turn into. A home services company should watch CPC alongside cost per lead to know whether expensive clicks are still worth it.
CPL (Cost per Lead)
CPL, or cost per lead, is total marketing or ad spend divided by the number of leads generated, such as form fills, calls or booked consultations.
CPL is the working metric for most service businesses, but it only matters if lead quality holds up. A cheap lead that never answers the phone is expensive. A law firm comparing a $40 CPL from one campaign with a $120 CPL from another should check which one actually produces signed clients.
Crawl Budget
Crawl budget is how many pages a search engine will crawl on a site in a given period, based on server capacity and how valuable the pages seem.
For most small sites crawl budget is not a real constraint; it becomes one on large sites with thousands of URLs, filters or duplicate pages. Wasting it on junk URLs can slow how fast important pages are found. An e-commerce store generating endless filter combinations should block or canonicalize them so crawlers spend time on real product pages.
Read: How do I get Google and Bing to index my pages faster?
CTR (Click-Through Rate)
CTR, or click-through rate, is the percentage of people who click a link or ad after seeing it, calculated as clicks divided by impressions.
CTR tells you whether your ad or search listing is relevant and appealing to the people seeing it. Good CTR depends on the platform, position and industry, so compare against your own history and similar campaigns. A title tag rewrite that lifts a page's CTR in Google Search Console means more visits without ranking any higher.
CTV (Connected TV)
CTV, or connected TV, advertising is video ads shown on internet-connected televisions through streaming apps and devices, bought digitally rather than through traditional TV networks.
CTV brings TV-style storytelling with digital targeting and reporting, and minimum budgets are far lower than broadcast. Measurement is improving but still imperfect, so pair it with brand search and site visit tracking. A furniture store might run a 15-second CTV spot to households in its delivery area during evening streaming hours.
Read: What is CTV advertising, and can small businesses afford it?
E
E-E-A-T
E-E-A-T stands for Experience, Expertise, Authoritativeness and Trustworthiness, the qualities Google's quality rater guidelines use to judge whether content and its creators are credible.
E-E-A-T is not a single ranking score, but it describes what Google's systems try to reward, especially on health, money and safety topics. Showing real authors, credentials, first-hand experience and a clear business identity all help. A roofing company that publishes photos and notes from its own jobs, signed by a named estimator, shows experience a generic article cannot.
Entity
In search and AI, an entity is a distinct, identifiable thing, such as a business, person, place or product, that systems recognize and connect to facts and other entities.
Search engines and AI models increasingly think in entities rather than keywords, so a business needs to be one clearly defined thing everywhere it appears. Inconsistent names, old addresses or two similar brands blur the entity. A firm that rebranded should make sure its website, profiles and directory listings all point to the same current name and connect it to the old one.
F
Fake Reviews
Fake reviews are reviews that misrepresent who wrote them or their experience, including bought, AI-generated, employee-written or incentivized reviews that hide the incentive.
In the US, the FTC's rule on consumer reviews and testimonials, effective in 2024, allows civil penalties for buying or selling fake reviews and related practices, and platforms like Google remove them and can restrict profiles. The short-term bump is not worth the risk. A business that wants more reviews should ask every satisfied customer consistently instead.
G
Generative Engine Optimization (GEO)
Generative engine optimization is the practice of making a business easy for AI assistants like ChatGPT, Gemini and Perplexity to find, understand, trust and recommend in their answers.
GEO matters because more buyers now ask an assistant for a recommendation before they ever open a search results page. It draws on SEO basics but adds work on entity clarity, third-party mentions, reviews and quotable content. For example, a bike shop in Bay View wants to be one of the names ChatGPT lists when someone asks for the best place in Milwaukee to get a commuter bike tuned up.
Read: What is generative engine optimization (GEO)?
Answer Engine Optimization (AEO) Search Engine Optimization (SEO) AI Share of Voice
Google AI Mode
Google AI Mode is a conversational search experience within Google that answers complex questions with an AI-generated response, follow-up questions and links, using Gemini models.
AI Mode leans heavily on query fan-out, breaking a question into many sub-searches, so content that answers specific sub-questions well has more chances to be used. It is still evolving and its reach varies by market. Someone planning a weekend in Door County might ask AI Mode one long question and get lodging, dining and activity sources in a single answer.
Google AI Overviews
Google AI Overviews are AI-generated summaries that appear at the top of some Google search results, answering the query and linking to the sources used.
AI Overviews change where attention goes on a results page: a searcher may get the answer without scrolling to the regular listings. Pages cited inside the overview can gain visibility, while pages below it may see fewer clicks. A homeowner searching "how often should I service my furnace" might read the overview and only click a cited HVAC company if it looks like the expert.
Google Analytics 4 (GA4)
Google Analytics 4 is Google's current web and app analytics platform, built around events rather than sessions, and it replaced Universal Analytics in 2023.
GA4 can show where visitors come from, what they do and which channels lead to conversions, but its default reports take setup to become useful. Defining key events like calls, form submissions and purchases is the first step. A clinic that marks appointment requests as key events can see which channels, including AI referrals, produce patients.
Google Business Profile
Google Business Profile is Google's free listing for a business, controlling how it appears in Google Maps and local search with details like hours, photos, reviews and services.
It is often the first thing a local customer sees, before your website. A complete, accurate profile with the right primary category, current hours, real photos and responses to reviews is one of the highest-return local marketing tasks. A brewpub that updates holiday hours and posts event photos gives Google and customers fresh, trustworthy signals.
Google Consent Mode
Google Consent Mode is a framework that passes a visitor's cookie consent choices to Google tags so measurement and ads adjust to what the visitor allowed.
Version 2 added the ad_user_data and ad_personalization signals, and Google requires them for advertisers using its ad personalization and measurement features with visitors in the European Economic Area and UK. US-only businesses face fewer requirements today, but state privacy laws are expanding. A Wisconsin company selling to European customers should have a consent banner integrated with Consent Mode v2.
Google Search Console
Google Search Console is Google's free tool that shows how a site performs in Google Search, including queries, clicks, indexing status and technical issues.
It is the most direct view of what Google sees on your site, and it is where you submit sitemaps and request indexing. For owners, the Performance report shows which searches bring people in. A landscaping company might discover it gets impressions for "retaining wall repair" and build a better page for it.
Read: How do I use Google Search Console as a business owner?
Google-Extended
Google-Extended is a robots.txt token that lets site owners control whether Google may use their content to train and ground Gemini models, separate from regular Google Search crawling.
It is not a separate crawler and, according to Google, it does not affect how a site ranks in Search or appears in AI Overviews, which are governed by Googlebot. That makes it a narrow choice about Gemini rather than a visibility switch for Google overall. A publisher worried about training use can disallow Google-Extended while staying fully indexed.
Read: Which AI crawlers visit websites, and what do they do?
GPTBot
GPTBot is OpenAI's web crawler that collects publicly available content that may be used to train OpenAI's generative AI models, and it respects robots.txt.
Blocking GPTBot signals you do not want your content used for training, but it is separate from OAI-SearchBot, which OpenAI uses to surface sites in ChatGPT search. Confusing the two is a common mistake. A publisher can disallow GPTBot and still allow OAI-SearchBot so its articles remain eligible to be cited in ChatGPT answers.
Grounding
Grounding is connecting an AI model's answer to specific, verifiable sources, such as live search results or documents, so the response reflects real facts rather than memory alone.
Grounded answers are usually the ones that show citations, which gives businesses a path to be named and linked. Google, Microsoft, OpenAI and Perplexity all ground answers with web search for many queries. If an assistant grounds its answer about local caterers in search results, the caterers with clear, current pages and reviews are the ones it can point to.
Read: What kind of content gets cited in AI answers?
Retrieval-Augmented Generation (RAG) Citation Google AI Overviews
I
IndexNow
IndexNow is an open protocol that lets a website instantly notify participating search engines, including Bing, Yandex, Naver and Seznam, when pages are added, updated or deleted.
Instead of waiting to be recrawled, you ping the protocol and participating engines learn about the change quickly. Google does not participate, so it does not replace Google Search Console or a sitemap. Because Bing's index also supports Microsoft Copilot and other tools, an online shop that turns on IndexNow can get price changes picked up faster there.
Internal Link
An internal link is a link from one page on your website to another page on the same site, helping visitors and search engines navigate and understand how pages relate.
Internal links spread authority to important pages and tell crawlers which pages matter most. Descriptive anchor text works better than "click here." A landscaping company can link its blog post on spring lawn care to its lawn aeration service page so both readers and search engines make the connection.
J
JSON-LD
JSON-LD is the format Google recommends for adding schema markup, placing structured data in a script block on the page instead of weaving it into the visible HTML.
Because it sits in one block, JSON-LD is easier to add, test and maintain than older inline formats. Most modern website platforms and plugins output it. A nonprofit can paste a JSON-LD Organization block with its name, logo, social profiles and founding date, then confirm it with Google's Rich Results Test.
K
Knowledge Graph
A knowledge graph is a database of entities and the relationships between them, which Google and other systems use to answer factual questions and display information panels.
Google's Knowledge Graph feeds the panels that show a business's or person's key facts on the right side of results, and similar graphs inform AI answers. Getting your facts into these graphs comes from consistent, corroborated information across reputable sources. A museum with matching details on its site, Wikipedia, Wikidata and Google Business Profile is far easier to represent accurately.
L
Landing Page
A landing page is the page a visitor arrives on from an ad, email or link, ideally built around one offer and one clear next step.
Sending paid traffic to a generic homepage is one of the most common reasons ads underperform. A focused page that matches the ad's promise, loads fast and makes the action obvious improves conversion rate and Quality Score. A tax preparer running ads for small business returns should send them to a page about exactly that, with pricing and a booking form.
Large Language Model (LLM)
A large language model is an AI system trained on huge amounts of text to predict and generate language, and it powers assistants like ChatGPT, Gemini, Claude and Copilot.
An LLM on its own only knows what was in its training data, which can be months or years old. That is why many assistants now pair the model with live search, so fresh, consistent information about your business matters. If an LLM says your bakery closes at 5 when you changed hours last spring, it is likely working from stale sources.
Read: How does ChatGPT decide which businesses to recommend?
Retrieval-Augmented Generation (RAG) Grounding Generative Engine Optimization (GEO)
llms.txt
llms.txt is a proposed plain-text file at a website's root that gives AI systems a short, curated map of the site's most important pages and what they cover.
It is a community proposal, not an official standard, and major AI companies have not publicly committed to reading it, so treat it as low-cost and optional. It can still be a useful forcing exercise to decide which pages truly represent the business. A consultancy might list its services, pricing, case studies and about page in a clean llms.txt file in under an hour.
Local Pack
The local pack is the block of map results, usually three businesses, that Google shows for searches with local intent such as "plumber near me" or "coffee shop downtown."
For local service businesses the local pack often drives more calls than the regular organic listings beneath it. Placement depends mostly on relevance, distance and prominence, which includes reviews and your Google Business Profile. A coffee shop in Walker's Point that keeps its profile complete and earns steady reviews competes for those three spots.
M
Mention Score
The Mention Score is Mention Group's metric, published in the AI Mention Report, measuring how often and how accurately AI answers name a brand for its buyers' questions.
It looks at the prompts a business's real customers ask across major assistants, then reports whether the brand shows up and whether what the AI says about it is correct. Accuracy matters as much as presence, since a wrong mention can cost a sale. A client can use the monthly score at mention.report to see whether visibility work is moving the needle.
Read: How do you measure AI visibility?
AI Share of Voice Generative Engine Optimization (GEO) AI Hallucination
Meta Description
A meta description is a short HTML summary of a page that search engines may show beneath the title in results, though they often write their own.
Meta descriptions are not a direct ranking factor, but a clear, specific one can improve click-through rate. Write them for people: what the page offers and why to click. A bakery's catering page might use a description mentioning order lead time, delivery area and dietary options.
Microsoft Clarity
Microsoft Clarity is a free behavior analytics tool that records anonymized session replays and heatmaps showing how visitors scroll, click and get stuck on a website.
It complements GA4: analytics tells you what happened, Clarity shows why. It is useful for spotting broken buttons, confusing forms and rage clicks. A business owner might watch replays and discover that mobile visitors cannot see the booking button below an oversized photo.
Read: What is Microsoft Clarity, and is it worth installing?
N
NAP (Name, Address, Phone)
NAP stands for name, address and phone number, the core business details that should be identical everywhere your business is listed online.
Consistent NAP helps search engines and AI systems confirm that every listing refers to the same business. Mismatches, like an old suite number or a tracking phone number on some sites, can split your signals and confuse customers. A dental office that moved should update its website, Google, Bing, Apple and key directories in the same week.
O
OAI-SearchBot
OAI-SearchBot is the OpenAI crawler used to find and surface websites in ChatGPT's search features, and sites that block it in robots.txt can be left out of those answers.
For most businesses this is the OpenAI bot that matters most for visibility, because it is tied to search results inside ChatGPT rather than model training. OpenAI also runs ChatGPT-User, which fetches a page when a person asks, and OpenAI notes robots.txt rules may not apply to it. A restaurant group checking its robots.txt should make sure OAI-SearchBot is allowed.
Read: Which AI crawlers visit websites, and what do they do?
P
Performance Max
Performance Max is a Google Ads campaign type that uses automation to place ads across Search, YouTube, Display, Discover, Gmail and Maps from a single campaign.
It can find conversions efficiently, but it gives up a lot of control and visibility, and it depends on accurate conversion tracking and good creative inputs. Without guardrails it can spend on brand searches you would win anyway. A retailer with solid product feeds and clean tracking is a better fit than a new business with no conversion history.
Read: What is Performance Max, and should I use it?
Conversion Tracking ROAS (Return on Ad Spend) Programmatic Advertising
PerplexityBot
PerplexityBot is the crawler Perplexity uses to discover and index web pages so they can be surfaced and linked as sources in Perplexity's answers.
Perplexity shows its sources prominently, so being crawlable by PerplexityBot is a prerequisite for being cited there. Perplexity also documents a separate agent for fetches a user triggers. A B2B manufacturer with a detailed spec page that PerplexityBot can read has a real chance of being linked when an engineer asks a technical comparison question.
Programmatic Advertising
Programmatic advertising is buying digital ad space automatically through software and real-time auctions, targeting audiences across many websites, apps and streaming services.
It lets businesses reach specific audiences at scale without negotiating with each publisher, but transparency varies, so ask where ads actually ran. It powers most display, video and CTV buying. A regional tourism board might use programmatic to reach people in Chicago and Minneapolis who have shown interest in lake getaways.
Q
Quality Score
Quality Score is Google Ads' 1 to 10 diagnostic rating of a keyword, based on expected click-through rate, ad relevance and landing page experience.
Quality Score is a diagnostic, not a direct input to the auction, but the factors behind it affect what you pay and where ads show. Low scores usually point to a mismatch between search, ad and landing page. A plumber sending "water heater repair" clicks to a generic homepage will likely score lower than one sending them to a dedicated water heater page.
Read: What is Google Ads Quality Score, and how do I improve it?
Query Fan-Out
Query fan-out is when an AI search system splits one question into many related sub-queries, searches each, and combines the results into a single answer.
Google has described fan-out as a core technique behind AI Mode, and other assistants work similarly. It means a page can be used for a narrow sub-question even if it would not rank for the original query. A question about the best family ski trip might fan out into lodging, lift prices and lessons, giving a ski school's lesson page a chance to be cited.
Read: What kind of content gets cited in AI answers?
Google AI Mode Retrieval-Augmented Generation (RAG) Topic Cluster
R
Reputation Management
Reputation management is monitoring and shaping what customers, search results and AI assistants say about a business, by earning reviews, responding to feedback and correcting errors.
Reputation now spans Google reviews, industry sites, social posts, news and AI answers, which often summarize all of those. Good reputation management is mostly operations: asking happy customers for reviews, responding professionally and fixing what the complaints point to. A multi-location restaurant group that responds to every review within a few days builds trust with readers and with Google.
Retargeting
Retargeting is showing ads to people who have already visited your website, used your app or engaged with your content, to bring them back to complete an action.
Retargeting is often efficient because the audience already knows you, but privacy changes have shrunk these audiences and frequency needs limits so ads do not feel stalking. It works best with a clear next step and fresh creative. An event promoter can retarget people who viewed the ticket page but did not buy with a reminder as the date approaches.
Read: What is retargeting, and is it still effective?
Programmatic Advertising Google Consent Mode Conversion Tracking
Retrieval-Augmented Generation (RAG)
Retrieval-augmented generation is a technique where an AI system first retrieves relevant documents, often from search or a database, then uses them to write its answer.
RAG is why many AI assistants can talk about recent events and specific businesses: they look things up before answering. It means your content needs to be findable and clearly written to be retrieved. When someone asks an assistant about a new restaurant, a RAG system may pull its website and recent reviews to answer.
Read: How does ChatGPT decide which businesses to recommend?
ROAS (Return on Ad Spend)
ROAS, or return on ad spend, is the revenue attributed to advertising divided by what was spent on that advertising, often written as a ratio like 4:1.
ROAS is useful but incomplete: it ignores margins, overhead and customers who would have bought anyway. A good ROAS depends on your profit margin, so a 3:1 return can be great for one business and a loss for another. A ticketed attraction that spends $2,000 and tracks $10,000 in ticket sales has a 5:1 ROAS.
CPA (Cost per Acquisition) Conversion Tracking Performance Max
robots.txt
robots.txt is a text file at a website's root that tells crawlers which parts of the site they may or may not request, using rules per user agent.
It is a request, not a lock: reputable crawlers follow it, bad actors may not. It now matters for AI too, because a single line can stop a search engine or an AI assistant's crawler from reading your site. Some site owners have accidentally blocked AI search bots through a hosting or CDN setting and then wondered why assistants never cite them.
S
Schema Markup
Schema markup is code added to a web page using the Schema.org vocabulary that labels what the content is, such as a business, product, event, review or FAQ.
It helps search engines and AI systems read facts about you without guessing, and it can make pages eligible for rich results. It does not guarantee rankings or AI mentions, but it removes ambiguity. A kayak rental company that marks up its LocalBusiness details, hours and seasonal events gives Google clean, machine-readable facts to work with.
Search Engine Optimization (SEO)
Search engine optimization is improving a website's content, technical health and reputation so it earns more visibility in unpaid search results on Google and Bing.
SEO is still the foundation most AI visibility is built on, because many assistants pull from search indexes when they answer. It covers what is on the page, how the site is built and how other sites refer to you. A law firm that fixes slow pages, writes a clear page for each practice area and earns links from local bar associations is doing SEO.
SERP
A SERP, or search engine results page, is the page a search engine shows in response to a query, including ads, organic listings, maps, AI summaries and other features.
Modern SERPs are crowded, so ranking first organically may still sit below ads, an AI Overview and a map pack. Looking at the actual results for your key queries tells you what kind of content and listing wins there. A dentist checking "emergency dentist Milwaukee" will see that the local pack, not a blog post, is the main prize.
Service-Area Business
A service-area business serves customers at their location, like plumbers or cleaners, and per Google's guidelines should hide its address and list the areas it serves instead.
Setting a service-area profile up wrong, such as showing a home address or a virtual office, is a common cause of suspensions. Google lets you list service areas, but where you rank is still shaped by where the business is actually based. An electrician working out of a home in Wauwatosa should hide the address and list the cities and ZIP codes they cover.
Read: How should a service-area business set up its Google profile?
Google Business Profile Local Pack NAP (Name, Address, Phone)
Structured Data
Structured data is information organized in a standard, machine-readable format so search engines and AI systems can understand facts on a page without interpreting prose.
On the web it usually means Schema.org markup written in JSON-LD, but the idea is broader: consistent tables, clear specs and labeled fields all help machines. For a business owner, it is the difference between Google inferring your hours and Google knowing them. An events venue with structured data for each show makes dates and ticket links easy to surface.
T
Title Tag
A title tag is the HTML element that sets a page's title, shown in browser tabs and often used as the clickable headline in search results.
It is one of the strongest on-page signals of what a page is about and has a big effect on click-through rate. Google may rewrite titles it finds unhelpful, so clear and specific titles hold up best. A page titled "Emergency Furnace Repair in Milwaukee | Same-Day Service" says much more than "Services."
Topic Cluster
A topic cluster is a group of related pages built around one broad pillar page, with supporting pages covering subtopics and all of them linked together.
Clusters show search engines and AI systems that you cover a subject thoroughly, and they give query fan-out more specific pages to draw on. They also help readers find the next useful page. A financial planner might build a pillar on retirement planning with supporting pages on Roth conversions, Social Security timing and required minimum distributions.
U
Unlinked Mention
An unlinked mention is when a website, article or post names your brand without linking to your site.
Unlinked mentions still help people and AI systems associate your brand with a topic, since language models learn from and retrieve text whether or not it contains a link. They are also an easy outreach opportunity: a polite request can turn some into links. A local news story naming your bakery as a favorite is valuable even without a hyperlink.
UTM Parameters
UTM parameters are tags added to the end of a URL, such as utm_source and utm_campaign, that tell analytics tools exactly where a visit came from.
UTMs let you separate traffic from a newsletter, a QR code on a flyer or a specific social post that would otherwise blend together. Consistent naming is everything, so keep a simple shared list. A brewery printing coasters with a QR code can tag it utm_source=coaster to see how many visits the coasters drive.
Read: What are UTM parameters, and how do I use them?
Google Analytics 4 (GA4) Conversion Tracking AI Referral Traffic
W
WCAG
WCAG, the Web Content Accessibility Guidelines, is the W3C's international standard for making websites and digital content usable by people with disabilities, organized into levels A, AA and AAA.
Level AA is the usual target and is what most laws and settlements reference; WCAG 2.2 is the current version, while the DOJ Title II rule uses WCAG 2.1 AA. Accessible sites also tend to be cleaner for search engines and AI systems to read. Adding text alternatives to images, sufficient color contrast and keyboard-usable menus are typical AA fixes.
Read: What is WCAG, and which level should my site meet?
ADA Title II Web Rule Accessibility Overlay Search Engine Optimization (SEO)
Wikidata
Wikidata is a free, collaborative structured database run by the Wikimedia Foundation that stores facts about entities and is widely used by search engines and AI systems.
Because it is open and structured, Wikidata is a common reference for knowledge graphs and AI models. It has notability rules and is community edited, so it is not a place for promotional entries, and conflicts of interest should be disclosed. An established regional manufacturer with independent press coverage may legitimately qualify for an accurate entry.
X
XML Sitemap
An XML sitemap is a file listing a site's important URLs, often with last-modified dates, that helps search engines discover and recrawl pages efficiently.
It does not force indexing, but it is a clear signal of which pages you consider important and when they changed. Keep it clean: only live, canonical, indexable URLs with honest dates. A nonprofit that adds event pages weekly should make sure its sitemap updates automatically and is submitted in Google Search Console and Bing Webmaster Tools.
Z
Zero-Click Search
A zero-click search is one where the person gets what they need on the results page or in an AI answer and never clicks through to a website.
Zero-click behavior means traffic is no longer the only measure of visibility; being named and quoted counts even without a visit. It is driven by featured snippets, maps, knowledge panels and AI Overviews. A searcher who sees a pizzeria's hours and phone link in the local pack, then calls, never visits the website but still became a customer.
Social Proof
Social proof is evidence that other people trust and choose a business, such as reviews, testimonials, case studies, client logos, awards and media mentions.
People rely on social proof when they cannot judge quality directly, and AI assistants lean on similar signals when deciding whom to recommend. Specific, recent and verifiable proof works better than vague praise. A wedding venue showing recent reviews with photos and named publications that featured it is far more convincing than a line saying "loved by couples."
Read: What is social proof, and how do I use it?
Reputation Management E-E-A-T Fake Reviews