Do you know the best way to do A/B testing?

Feature Flags (Recommended)

Feature flags are a modern way to toggle features for users. They are essentially a little bit of code that can be turned on and off at will. That means you can choose, when features are deployed and who gets them.

Feature flags are often implemented by developers writing their own code. However, there are better solutions today:

• LaunchDarkly
  • Video interview of LaunchDarkly CEO Edith Harbaugh
• Azure App Configuration is the recommended solution and there are some great tutorials that help developers get up and running in minutes:
  • Use feature filters to enable conditional feature flags
  • Tutorial: Use feature flags in an ASP.NET Core app

Azure Deployment Slots

Azure Deployment Slots are another way of doing A/B testing, you essentially deploy 2 versions of your app and then direct traffic to different versions.

Azure FrontDoor

Azure FrontDoor is an offering that lets developers direct traffic to different versions of an app.