Hey I'm Tony, one of the devs at Braintree. We chose v.zero because we tried to rethink how our merchant integrated with us from first principles. This represents our simplest integration yet. You can check out more at https://www.braintreepayments.com/v.zero
Our goal is to make applying changes to a server an intentional step. Instead of changes in production being pulled, we make it a push. With more complex changes it involves unbalancing a server, making the change, testing that everything is working correctly, then rebalancing it. While smaller changes, we simply apply them to the environment wholesale. This process gives us the flexibility to do both.
