The connection groups feature allows for multiple virtualized applications to communicate with each other. Typically, this feature is used when an administrator wishes to virtualize middleware applications (for example, the Java Development Kit) or a plugin (for example, a Microsoft Office add-in) to be used with other App-V packages.

It's worth noting that Connection Groups (previously known as Dynamic Suite Composition in App-V 4) received a major overhaul in App-V 5 SP3, and as such, please ensure that you are running at least version number 5.0.10107 on the sequencer, client, and server.

Finally, as of App-V 5, SP2 Microsoft provides full support for virtualizing the Microsoft C++ runtimes as a middleware package.