At the beginning, before the introduction of an Identity and Access Management (IAM) solution, often the question arises: Make or buy? It seems much easier, cheaper and faster to implement the few functions yourself than evalu­ating, buying and implementing a professional solution. For developers, the implementation of an in­house IAM solution is also an exciting task: The topic has been known for a long time, the necessary libraries are easily available and usually well documented. Read more.