1. A computer program product for generating an application topology, the computer program product comprising: one or more computer-readable storage media and program instructions stored on the one or more computer-readable storage media, the program instructions comprising: program instructions to determine a first application profile based, at least in part, on a first network packet; program instructions to determine a second application profile based, at least in part, on a second network packet; program instructions to determine a link between a first application and a second application based, at least in part, on address information of the first network packet; program instructions to generate a topology comprising the first and second application profiles based, at least in part, on the link, the first application profile and the second application profile; and program instructions to update the first and second application profiles based, at least in part, on matching the first application profile and second application profile with an application deployment template.