Search Engine

What is Google

The dominant search engine and the single biggest source of organic and paid demand for most businesses.

Overview

Google is a subsidiary of Alphabet Inc. and runs the search engine that still handles the large majority of the world's web searches. For marketers it is two things at once: the organic index we optimise for with SEO, and the Google Ads auction we buy from for paid search, shopping and display.

Google also sets much of the practical rulebook for the modern web. Its ranking systems, Core Web Vitals, mobile-first indexing, structured-data support and — more recently — AI Overviews and AI Mode shape how sites need to be built and written to be found.

What they do

Google crawls, indexes and ranks the web, then answers queries through classic blue links, rich results and increasingly AI-generated summaries. Alongside search it runs the Google Ads auction, Google Business Profile for local visibility, and the free tools most SEO work depends on.

Search: organic index plus AI Overviews and AI Mode
Google Ads: search, Shopping, Performance Max, display and YouTube
Google Business Profile: the backbone of local and map-pack visibility
Search Console, Analytics (GA4) and PageSpeed Insights for measurement

Why they matter for your site

Because Google sends most organic and paid search traffic, its guidelines are effectively the spec for a healthy site. Core Web Vitals affect user experience signals, structured data unlocks rich results, and the helpful-content and E-E-A-T guidance drives what kind of content earns rankings. AI Overviews now sit above traditional results for many queries, so being cited there is a growing part of the job.

How REO Rank works with their platform

We treat Google Search Console and GA4 as the ground truth for performance, tune sites against Core Web Vitals and mobile-first indexing, and implement Schema.org markup that Google actually consumes. On the paid side we manage Google Ads accounts, and on AI search we structure content and entities so pages qualify for AI Overviews and AI Mode citations.

Why it matters for SEO

Google is the dominant search engine, handling the large majority of global searches, which is why "SEO" in practice means optimising for Google. It matters because Google effectively sets the rules of organic search — its ranking systems, guidelines, algorithm updates and product decisions (from featured snippets to AI Overviews) determine how billions of people find information and how businesses are discovered. Understanding Google as an organisation — its stated guidelines, how it communicates, and how its incentives shape search — is foundational context for everyone who works in SEO or digital marketing.

The dominant search engine — SEO in practice means optimising for Google
Effectively sets the rules of organic search through its ranking systems
Its guidelines, updates and products shape how the web is discovered

How it shapes search

Google's influence runs through several channels SEOs track closely: its Search Essentials (formerly Webmaster Guidelines) state what it expects; its algorithm updates (core updates, spam updates, and specific systems) periodically reshape rankings; its Search Quality Rater Guidelines reveal the qualities (like E-E-A-T) it aims to reward; and its official channels (Search Central blog and documentation, and its search-liaison communications) provide guidance. It also continuously reshapes the results page itself — snippets, packs, and increasingly AI-generated answers — which changes how visibility works. Following Google's own communications is the most reliable way to understand what it rewards, versus the speculation that fills much of the SEO conversation.

Search Essentials state expectations; algorithm updates reshape rankings
Quality Rater Guidelines reveal targeted qualities like E-E-A-T
Official Search Central channels provide authoritative guidance
Continuously reshapes the results page, including AI answers

Beyond search

Google (part of Alphabet) is far more than search — its products (Chrome, Android, YouTube, Maps, Workspace, Cloud, Gemini) and its dominance in browsers and mobile give it enormous reach and data, and many of these products intersect with SEO and marketing: Chrome's field data feeds Core Web Vitals, YouTube is the second-largest search engine, Maps drives local search, and Google Ads funds much of it. Its move into AI (Gemini, AI Overviews) is now reshaping search itself. For practitioners, the practical stance is to treat Google's official guidance as authoritative, watch its updates and product shifts closely, and build for genuine quality and user value — which is what its systems, over time, are designed to reward.

Chrome, Android, YouTube, Maps, Cloud and Gemini give vast reach and data
Many products intersect SEO: Chrome (CWV field data), YouTube, Maps, Ads
Its AI push (Gemini, AI Overviews) is reshaping search itself
Treat its official guidance as authoritative and build for genuine quality

Connected in the graph

Related organizations

Part of our organizations knowledge graph — browse every entry in this branch.

Microsoft

Technology Company

The company behind Bing, Copilot and Azure — and the number-two search index that feeds several AI assistants.

Schema.org

Standards Body

The shared vocabulary for structured data that search engines and AI use to understand your pages.

Mozilla

Non-Profit

The non-profit behind Firefox and MDN Web Docs — a guardian of an open, standards-based web.

OpenAI

AI Lab

The AI lab behind ChatGPT and the GPT models — a major new surface where people discover brands and answers.

Common questions

Google — questions

Straight answers on how this fits your marketing and build.

Does Google still dominate search in 2026?

Yes. Despite growth in AI assistants and Bing-backed Copilot, Google still handles the large majority of global web searches, so it remains the primary target for both SEO and paid search for most businesses.

What are AI Overviews and do they affect my SEO?

AI Overviews are AI-generated summaries Google places above traditional results for many queries. They can reduce clicks to some pages while creating a new prize: being cited as a source. We optimise content and structured data so your pages are eligible to be cited.

Why does SEO focus almost entirely on Google?

Because Google handles the large majority of global searches, so ranking well on Google captures most organic search traffic. Other engines matter in specific contexts, but Google's dominance means its ranking systems and guidelines effectively define the field — optimising for Google is optimising for most of search.

How do I know what Google actually rewards?

Follow its own authoritative sources rather than speculation: Search Essentials (its guidelines), the Search Quality Rater Guidelines (which reveal targeted qualities like E-E-A-T), the Search Central blog and documentation, and its official search-liaison communications. These are the reliable signal amid the noise, and they consistently point toward genuine quality, expertise and user value.

Still have questions? Talk to a specialist