Federated search
（重定向自Federated query）
![Federating across three search engines](/Images/godic/202501/12/Fed_search4055.png")
Federated search is an information retrieval technology that allows the simultaneous search of multiple searchable resources. A user makes a single query request which is distributed to the search engines, databases or other query engines participating in the federation. The federated search then aggregates the results that are received from the search engines for presentation to the user.