Working with targeting and variations

The key to feature management and where LaunchDarkly really shines is in its ability to target feature flags' variations to specific users. This is done within the Targeting section of the Feature flags page. There are four key aspects to Targeting, and they are Prerequisites, Target Individual users, Target users who match these rules, and Default rule. These are shown in the following screenshot:

Figure 9.19 – The Targeting section of a feature flag

Much of this functionality has already been discussed in detail in previous chapters: targeting individual users or segments and targeting users who match a rule and default rule in Chapter 3, Basics of LaunchDarkly and Feature Management, and Chapter 4, Percentage and Ring Rollouts, respectively, and Prerequisites in Chapter 8, Migrations and Testing Your Infrastructure.

Next, will provide a simple overview of this section of the feature flag since more detailed...