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Glossary A–Z

Terms starting with R

30 terms. Search all 545 terms →

Web Development

REST API

A REST API is a widely used standard for letting software systems exchange data over the web using standard HTTP requests.Read definition →PPC

ROAS

ROAS is the revenue earned for every dollar spent on advertising.Read definition →Analytics

ROI

ROI is a measure of the profit generated by an investment relative to its cost.Read definition →SEO

Rank Tracking

Rank tracking is the ongoing monitoring of a website's positions for target keywords in search engine results.Read definition →SEO

RankBrain

RankBrain is a machine-learning component of Google's algorithm that helps interpret the meaning behind search queries.Read definition →Tech Stack

RankMath

RankMath is a WordPress SEO plugin that competes with Yoast, offering a wide set of features.Read definition →Web Development

Rate Limiting

Rate limiting is a technique that caps how many requests a client can make to a service within a set time window.Read definition →Social Media

Reach

Reach is the number of unique people who see a piece of social content or an account's posts.Read definition →Web Development

React

React is a popular JavaScript library for building fast, interactive user interfaces, especially single-page applications.Read definition →PPC

Real-Time Bidding

Real-time bidding, or RTB, is the process by which digital ad impressions are auctioned and sold one at a time as a page loads.Read definition →SEO

Reciprocal Link

A reciprocal link is an arrangement in which two websites agree to link to each other.Read definition →SEO

Reconsideration Request

A reconsideration request is a formal appeal asking Google to re-review a site after a manual action has been resolved.Read definition →SEO

Redirect Chain

A redirect chain is a sequence of two or more redirects a browser must follow before reaching the final URL.Read definition →Tech Stack

Redis

Redis is an open source, in-memory data store used as a cache, database, and message broker.Read definition →Social Media

Reel

A reel is a short, vertical video format built for entertainment and discovery.Read definition →Analytics

Referral Traffic

Referral traffic is visitors who reach your site by clicking a link on another website.Read definition →SEO

Referring Domain

A referring domain is a unique external website that contains at least one backlink pointing to your site.Read definition →Web Development

Regular Expression

A regular expression is a sequence of characters that defines a search pattern for matching and manipulating text.Read definition →PPC

Remarketing

Remarketing shows ads to people who already visited your site but did not convert.Read definition →SEO

Render-Blocking Resource

A render-blocking resource is a file the browser must download and process before it can display the page.Read definition →Web Design

Responsive Design

Responsive design is an approach where a website's layout adapts to fit any screen size.Read definition →PPC

Responsive Search Ad

A responsive search ad supplies multiple headlines and descriptions that Google mixes and tests automatically.Read definition →PPC

Retargeting

Retargeting shows ads to people who previously visited your site but did not convert.Read definition →AI / GEO

Retrieval-Augmented Generation

Retrieval-augmented generation is an AI method that fetches external data to ground its responses before generating them.Read definition →Web Development

Reverse Proxy

A reverse proxy is a server that sits in front of one or more web servers and forwards client requests to them.Read definition →SEO

Review Schema

Review schema is structured data that labels ratings and reviews so search engines can display star ratings.Read definition →SEO

Rich Snippet

A rich snippet is a search result enhanced with extra visual information such as star ratings, prices, or images.Read definition →SEO

Robots.txt

Robots.txt is a text file that tells search engine crawlers which parts of a website they may or may not access.Read definition →Web Development

Rollback

A rollback reverts a website, app, or database to a previous working version after a bad change.Read definition →Web Design

Rule of Thirds

The rule of thirds is a composition guideline that divides a frame into a 3x3 grid and places key elements along the lines or their intersections.Read definition →