Enterprise search is the practice of making content from multiple enterprise sources such as databases and intranets, searchable to a defined audience. "Enterprise search" is also used to describe the software of search information within an enterprise.
Enterprise search systems index data and documents from a variety of sources such as file systems, intranets, content management systems, e-mail, and databases. Many enterprise search systems integrate structured and unstructured data in their collections. Enterprise search systems also use access controls to enforce a security policy on their users.