Deep web
The deep web is the part of the web that conventional search engines do not index, such as pages behind a login, searchable databases or content blocked from crawling
What it means, how it is used and where it comes up, with its related concepts.
What it is and how it works
It includes very ordinary content: webmail, online banking, intranets, internal search results, documents in cloud services and pages that their owners exclude from search engines. Much of what people use online every day belongs to it.
It should not be confused with the darknet or dark web, a much smaller portion reachable only with specific software such as Tor, associated with anonymity and, in part, with illegal activity. Figures circulating about its size are estimates that are hard to verify.
Also known as
invisible web, hidden web
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