Examples of the present disclosure describe systems and methods of providing a people relevance platform. In aspects, an event may be generated by an application/service on a client device. The event may be transmitted to a people relevance platform. The people relevance platform may use the event to query one or more data sources for user contacts associated with the user. The people relevance platform may generate/modify a graph or model using the user contact data, and may provide the user contact data to the client device. The client device may update a local cache and provide the user contact data to the originating application. The client device may monitor the user selection of a contact, and transmit the selection information to the people relevance platform. The people relevance platform may modify the graph and/or model based on the selection information.