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Google introduces its enterprise search feature - the 'Search Appliance'.
The appliance mapped all the web documents on the network accessible via hypertext transfer protocol (HTTP) in a process known as crawling, then creates an index of those documents.
It used PageRank to analyze the link structure of the network to determine the most important, highest quality pages across all sites. Then for each query, applied hypertext analysis using more than 100 variables to determine relevance.
It searched Microsoft Office documents, PDF, PostScript, and dozens of other file types.
Tabbed categories appeared above the search bar.