Web, domains and email
indexing
In short and in plain language
Indexing means that a search engine adds a page to its database.
Before that, a crawler has found the page and looked at it. Only pages in the database can show up in search results.
Settings on a website can say which pages should be added.
Definition
Indexing is the inclusion of a page in the database of a search engine after a crawler has found and analysed it. Only indexed pages can appear in search results. Technical settings on a website can indicate which pages should be included.