TagBuildOnPathChanges

This extension enables you to tag your build with VSTS / TFS tags during the build, based on path filters (much like the filters which you can set for build triggers.)

Example

Assume you have a build that builds 2 components, an API and an AngularJS frontend application.
If changes are made to the API or the DAL, you want to add a tag "Backend". Consequently, if changes are made to the frontend application, you want to tag the build with "Frontend"

This can be achieved by adding 2 tasks to your build flow and configuring them as follows:

Further reading

More information about this can be found in my blog post (from before it was an extension)