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When we add features to a product, we rarely think about composability. We assume that it is OK for any feature to rely on internal implementation of some other features. Let’s take a simple ToDo App (every developer created one in his lifespan). For example, we add a Filter

Not Invented Here is a popular mantra in many companies. Majority thinks that you should focus on business value, and all other things are secondary. Let’s take a small company of 20 people that creates iOS Apps. Obviously, you should use existing tools for coding, tasks management, team communication,

We tend to believe that every new feature is a good and valuable addition to a product. Quite often, it can be hard to not implement a feature, especially when you’re constantly hearing good ideas for new features every week. The problem is that every new feature adds debt