Reference
Plain-English definitions of 26+ terms across web development, SEO, AEO, GEO, conversion optimization, and cold email — written by a working Denver agency for business owners and developers alike. Each entry leads with a short, citable definition and follows with practical context.
A method for comparing two versions of a webpage or element to see which one converts better.
A/B testing runs two variants of a page or element simultaneously, splitting real traffic between them, and measures which produces more of a target outcome — clicks, signups, purchases. It's how teams replace guesses about what will convert with statistically informed answers based on real visitor behavior.
The practice of structuring content so AI answer engines like ChatGPT, Perplexity, and Google AI Overviews cite your site as a source.
AEO is the evolution of SEO for the era of AI-generated search answers. It involves direct-answer content structure, FAQPage and Speakable schema, comprehensive question-shaped headings, and authoritative source signals. The goal is to be one of the small number of sites cited when an AI engine generates a response in your topic area.
A defined way for two software systems to talk to each other and exchange data.
APIs are how a website talks to a CRM, payment processor, scheduling tool, or any other external service. When your contact form sends data to HubSpot, when a booking widget checks a calendar, when a site pulls product inventory from a back-end — that's an API call. Modern custom web apps are largely an exercise in connecting the right APIs intelligently.
Links from other websites pointing to your website, which Google uses as a signal of credibility.
Each backlink is essentially a vote of confidence from one site to another, and Google weighs the authority of the linking site heavily. A single backlink from a major industry publication can outweigh dozens of low-quality links. For SMBs, the most reliable backlink source is genuinely earned coverage — press, podcasts, podium mentions — not link-buying schemes.
The percentage of visitors who land on a page and leave without taking any action.
A high bounce rate isn't automatically bad — for a blog post that fully answers a question, it can be fine. But for a service-business homepage or landing page, high bounce typically signals a conversion architecture problem: unclear value proposition, broken mobile experience, slow load times, or weak calls-to-action.
Software that lets non-technical users add, edit, and manage website content without touching code.
A CMS is the layer between your team and the website's underlying code. WordPress is the most familiar example; headless options like Sanity, Contentful, and Strapi are common in modern builds. The right CMS choice depends on how much your team will actually update the site and how custom your content model needs to be.
A B2B sales channel where you reach out via email to prospects who haven't asked to hear from you.
Done well, cold email is a predictable, scalable lead-generation channel. Doing it well requires dedicated sending infrastructure (separate domains, multiple warmed mailboxes, full SPF/DKIM/DMARC authentication), tight ICP targeting, personalized first-line copywriting, and ongoing deliverability monitoring. Done badly, it burns your domain reputation and generates nothing.
The discipline of improving the percentage of website visitors who take a desired action.
CRO is mostly not about adding more traffic — it's about extracting more value from the traffic you already have. It includes copy clarity, CTA placement, trust signals, form-field reduction, page-speed work, mobile experience, and user-flow analysis. For most SMB websites, CRO improvements compound faster and cost less than traffic-acquisition investment.
Google's three official metrics for real-world page experience: Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS).
Targets: LCP under 2.5 seconds (loading speed), INP under 200 milliseconds (interactivity), CLS under 0.1 (visual stability). Google uses Core Web Vitals as a tiebreaker ranking signal — when content quality is comparable between competing pages, the one with better Vitals wins. And the metrics correlate directly with conversion rate regardless of ranking impact.
Software built specifically for one business's workflow, rather than a marketing website or an off-the-shelf SaaS tool.
A custom web app has users who log in, data that's created and managed, an admin panel an operator runs, and a workflow it powers. Examples: a client portal for a private investment firm, a tournament platform for a golf club, an event registration system for a recurring competition. Different problem than a marketing website, and a different cost range.
A page created primarily to rank for specific queries and funnel users elsewhere, rather than to provide unique value on its own.
Doorway pages are explicitly against Google's spam policies. The classic offending pattern is a service-by-location matrix — dozens or hundreds of near-identical pages where only the city or service name changes. Penalties can apply site-wide, not just to the offending pages. Legitimate location and industry pages avoid the penalty by providing genuinely unique content per page and being part of a browseable site hierarchy.
Google's framework for content quality: Experience, Expertise, Authoritativeness, and Trustworthiness.
E-E-A-T is what Google's quality raters use to evaluate whether content deserves to rank — particularly for queries where accuracy matters (medical, financial, legal). The 'Experience' addition emphasizes first-hand knowledge: a doctor writing about a procedure they perform, an agency writing about projects they've actually shipped. Cited author entities, real credentials, and real case studies are the practical signals.
Optimization specifically for AI-generated search experiences like Google AI Overviews and ChatGPT search.
GEO overlaps heavily with AEO but specifically focuses on generative AI's distinctive citation behavior — preferring sources with structured data, direct answers, original data, and clear entity authority. Strong GEO signals include comprehensive Organization schema with a 'knowsAbout' array, Person schema for named authors, and content written with extractable definitional clarity.
A content management system that separates content storage from the website's front end.
Traditional CMSes like WordPress couple content management with how content is displayed; a headless CMS provides only the content via API and leaves the front end to a framework like Next.js. Benefits: faster performance, better security, and the ability to publish the same content to multiple destinations. Tradeoff: more developer involvement for content model changes.
The JSON-based format Google recommends for adding structured data to webpages.
JSON-LD lets you declare facts about a page — that this is an Article, this is the FAQPage, this is an Organization with these social profiles — in a machine-readable format. Search engines and AI engines consume it to understand content. Modern SEO and AEO depend on it heavily; without proper JSON-LD, you're leaving a lot of ranking and citation signal on the table.
A focused page designed to convert visitors from a specific traffic source into a specific action.
Landing pages differ from a general homepage by having a single clear purpose and removing distractions that don't serve it — minimal navigation, focused copy, one primary CTA. They're the standard destination for paid ads, email campaigns, and high-intent SEO traffic. The conversion rate of a well-built landing page typically beats a homepage substantially for the same source traffic.
An automated scoring system from Google for page performance, accessibility, best practices, and SEO.
Lighthouse runs in Chrome DevTools and scores a page 0–100 across four categories. It's lab data, not field data — useful for catching regressions during development but not the final word on real-user experience. Pair Lighthouse with field data from Google Search Console's Core Web Vitals report for a complete picture.
Search engine optimization specifically aimed at ranking for location-based queries like 'web designer near me' or 'plumber in Denver'.
Local SEO combines on-site signals (location-aware content, LocalBusiness schema, NAP consistency) with off-site signals (Google Business Profile optimization, local citations, customer reviews). For service businesses with a defined service area, local SEO is typically the highest-ROI marketing investment available — far more efficient than national SEO competition.
A React framework for building fast, SEO-friendly websites and web applications with server-side rendering.
Next.js is the modern default for high-performance custom websites. It pre-renders pages on the server (better for SEO and Core Web Vitals than client-only React), supports static, dynamic, and incremental rendering, and integrates cleanly with CMSes, APIs, and modern hosting. We build most custom Nerd Stack projects on Next.js because it's faster, more secure, and ranks better than the alternatives.
A protocol that controls how a webpage appears when shared on social media platforms.
Open Graph meta tags define the title, description, and image that show up when someone shares your URL on LinkedIn, Facebook, X, Slack, iMessage, and most other platforms. Without them, you get a generic, low-conversion preview; with them, every share is a small, branded ad. Open Graph plus a Twitter Card is the standard pair every page should have.
Structured data added to a webpage that tells search engines and AI engines what the content is about, in a machine-readable format.
Schema markup uses the vocabulary defined at Schema.org — types like Organization, Article, FAQPage, Service, Person, Product. Adding the right schema unlocks rich search results (FAQ accordions, star ratings, breadcrumbs) and is now table stakes for AEO. JSON-LD is the format Google recommends.
Generating a webpage's HTML on the server for each request, so the page arrives fully rendered to the browser.
SSR contrasts with client-side rendering, where the browser gets a mostly-empty shell and JavaScript builds the page after loading. SSR is dramatically better for SEO (search engine crawlers see the full content), faster perceived load, and more reliable for AI crawlers that don't execute JavaScript. Modern frameworks like Next.js make SSR the default.
Three DNS records that authenticate the emails sent from your domain and are required for reliable inbox placement.
SPF lists which servers can send mail for your domain. DKIM cryptographically signs each outgoing message. DMARC tells receiving servers what to do with messages that fail SPF or DKIM. Since Google and Yahoo's 2024 bulk-sender requirements, all three are mandatory for any volume cold email — and missing them can cut deliverability by up to 30%.
A rendering approach where every page is pre-built into static HTML at build time, then served as-is from a CDN.
SSG produces the fastest possible page loads — there's no server computation per request, just a CDN delivering a pre-built file. Best for content that doesn't change per visitor: marketing sites, blogs, documentation. Next.js, Astro, and other modern frameworks support SSG as a per-page option, mixed with SSR where dynamic content is needed.
UX is the overall experience of using a product; UI is the specific visual interface a user interacts with.
UI design is colors, typography, layout, button styles — the visible surface. UX design covers the full experience: information architecture, user flows, ease of completing tasks, perceived performance. Good UI without good UX is a beautiful site that nobody can figure out how to use; good UX without good UI works but feels generic. Effective web design requires both.
The world's most widely used content management system, powering a significant share of websites worldwide.
WordPress is mature, flexible, and well-supported by a huge plugin and theme ecosystem. Strong for content-driven sites, custom client portals (built on a custom theme + plugins, not a generic template), and businesses where non-technical staff need to manage content regularly. Less optimal for product-grade web applications and the highest-performance marketing sites, where Next.js typically wins.
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