1. A method for managing access to a plurality of business entity attachments, the method comprising: storing, by a content management server, a plurality of business entities associated with the plurality of business entity attachments, the plurality of business entity attachments being unstructured data items; receiving, by a mediator server, a request for a business entity attachment of the plurality of business entity attachments, wherein: the request is received from a business application executed by a remote computer system; the business application determines the request is permissible in accordance with a security profile of the business application; and the mediator server is configured to receive requests from multiple different types of business applications executed by multiple remote computer systems; selecting, by the mediator server, the content management server from a plurality of available content management servers based on content of the request; sending, by the mediator server, an identifier request to the content management server based on the received request, wherein the identifier request identifies the business entity attachment; assigning, by the content management server, an identifier to the business entity attachment; sending, by the content management server, the identifier to the mediator server; creating, by the mediator server, a universal resource indicator comprising the identifier; and transmitting, by the mediator server, the universal resource indicator to the business application executed by the remote computer system.