A/B tests

[jamesefhawkins]

Should we change the title of this to something more like "make URL level A/B tests easier"?

You can do A/B tests with feature flags, and more ( this came out of a chat that @yakkomajuri and I had on a PR for a feature flags tutorial)

It is possible to improve the feature flags UX to make a/b testing more intuitive. For example, with Google Analytics, you can create two different URLs, both with their snippet in the header. Then you can direct traffic at a URL level to one page or the other. That isn't trivial with our current set up.

[paolodamico]

Superseded by #3431