Chapter 4
Pattern Language Introduction
In Part 1, we learned that remote APIs have become an important feature of modern distributed software systems. APIs provide integration interfaces exposing remote system functionality to end-user applications such as mobile clients, Web applications, and third-party systems. Not only end-user applications consume and rely on APIs—distributed backend systems and microservices within those systems require APIs to be able to work with each other as well.
Lakeside Mutual, a fictitious insurance company, and its microservices-based applications provided us with an example case. We saw that API design and evolution involve many recurring design issues to resolve conflicting requirements and find appropriate ...
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