You can build multiple projects with MSBUILD

https://msdn.microsoft.com/en-us/library/bb651793.aspx

You can use MSBuild to build multiple projects faster by running them in parallel. To run builds in parallel, you use the following settings on a multi-core or multiple processor computer:

• The /maxcpucount switch at a command prompt.
• The BuildInParallel task parameter on an MSBuild task.
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