FeatureBoard has taken a step back from targeting users and instead allows you to specify Audiences which a user would belong to.
This approach has a number of advantages for simplicity and scalability.
Can I do A/B testing with FeatureBoard
While A/B testing is not officially part of FeatureBoard right now we have a blog post on the way which describes how to manually configure A/B testing with FeatureBoard. If this interests you, please contact us to let us know you are waiting.