A system that discovers, organizes, and retrieves information in response to a user’s query.
A search engine helps people find information by matching a query with material it can retrieve. A general web search engine works across many websites; a store’s internal search tool works within a much narrower collection. Google and Bing are examples of web search engines, but the term describes the system, not one company.
For web search, discovery and retrieval happen in stages. A crawler can request a page, the engine can process its content for an index, and ranking systems can select and order results for a particular query. The index is the engine’s searchable collection of processed information. A normal search is not a fresh visit to every website on the internet, which helps explain why changes on a site may not appear immediately in results.
The results page is also more than a list of websites in some fixed order. Depending on the engine and query, people may encounter web links, images, videos or other result formats. Advertising placements have a different commercial basis from unpaid results. It is useful to identify which experience a customer used before drawing conclusions about a website’s performance.
Takeaway: Think about the searches your customers actually make and the results they see. Your website needs clear information about its real offer, not just a mention of a search engine’s name or a business profile on one platform.
Example
A customer searches for a replacement part by model number. A search engine may show a manufacturer page, retailers and a repair guide. A small retailer can make its own page useful by identifying the exact part, relevant product information and purchase options. That improves the clarity of its offer without controlling which result the engine selects.
What to check
When investigating a missing page, separate discovery, indexing and ranking questions. A page can exist on your website without being in an engine’s index, and an indexed page can still be hard to find for a competitive query.
For more detail, see How Google Search works.