With its complimentary SSL (on *.herokuapp.com) we can test everything. Our dev branch is built and deployed out to Heroku. Testing happens out here. not production cause $20/mo is TOO much to pay for the ability to use my own SSL purchased elsewhere.

We are still trying to figure out the best logging approach for production

$5/mo server with no extra charge for custom domain or custom SSL certs.

Make deployments to the server as simple as Heroku.

Free private repository is really nice.

All our data storage fits into the free tier.

The Bitbucket integration with branch whitelists allows you to conserve your 100 builds this month.