1. A method comprising: detecting, by a mobile computing device, caller identification information associated with a call; identifying, by the mobile computing device, a contact identifier in response to the caller identification information; determining, by the mobile computing device, a layout definition based on contextual details comprising the contact identifier, wherein the layout definition comprises specifications for retrieving and displaying information from a business system; generating, by the mobile computing device, a request for information comprising the contact identifier; sending the request for information from the mobile computing device to the business system; and receiving, in the mobile computing device, in response to the request for information, information associated with the contact identifier.