VSTS offers the ability to create build definitions to validate/deploy your code, but Gearset customers don't have much options natively in VSTS to trigger a Gearset deployment. We can scan a code repository for changes every 4 hours in order to do a CI deployment-- but that's about it.

VSTS offers the ability for vendors to create "Build Tasks" for their applications, where you can initiate a VSTS build and get results. This is basically a controlled version of API access to the tool.

More information:
VSTS Marketplace - https://marketplace.visualstudio.com/vsts
VSTS "Add a Build Task" - https://www.visualstudio.com/en-us/docs/integrate/extensions/develop/add-build-task

It would be so great to be able to intiate a Gearset deployment directly from within VSTS, so we could easily integrate Gearset within our company's workflow.

Our other alternatives are embedded Ant using the Force.com Migration Tool (ugh) or competitive vendors to Gearset such as Blue Canvas-- neither of these are attractive options for us, so we'd love if Gearset offered this!