Versioning an API is one of those programming puzzles that seems simple in its essence, but tends to quickly get complicated the more you discover. There are several common approaches. Some are better than others, and perhaps all have shortcomings of one type or another. So which approach is best? That might be a rhetorical question, but in this session I will showcase one which I believe to be a contender. I will walk through the successes and struggles of setting it up for the first time, and hopefully inspire others to give it a try.