Disclosed are systems, computer servers, and methods to provide features of an automotive commerce exchange platform to users via a single sign-on. A computer server is configured to provide a plurality of different third-party features of a plurality of different third-party feature providers on the automotive commerce exchange platform, and to provide to the users, via user devices, access to individualized subsets of the third-party features via a plurality of single individualized sets of sign-on credentials. Each single individualized set of sign-on credentials corresponds to a different user.