Also known as a dark launch, this last strategy is the hardest one to implement but also the most valuable. It is used by most well-known tech companies. The idea is to have multiple smart switches on each of your features. When you first deploy the code for a new feature, you do so with those switches turned off. You then progressively turn them on for different subsets of users. You might start by only allowing employees of the company to experience the feature. You might then decide to increase the number of people exposed to that feature by adding a set of trusted users. You might then turn the feature on for 20% of your users, then 50%, and so on. As well as allowing you to do a soft launch, this type of features can be ...
Feature flags
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