Using the Delivery Pipeline service, I'd like to deploy my artifacts to staging/QA environments where QA/Product team members can test features/defect fixes before those changes get merged into Production branch.
How would I spin up these temporary testing environments when pull requests are created?
There is currently no way to build off of pull requests. One option would be to have a separate branch that people can merge code into. You can then have a build stage which builds that branch and a deploy stage to deploy to your staging/qa environment. You can then have another stage will does the merge into the production branch. (Note, this stage should only be triggered manually.)