When all systems are friendly, but you can no longer hold back the flow of JSON messages

In most IT projects, there is the task of integration between systems to exchange data, and the development of integrations can also be a project in its own right. This common task can be solved in a variety of ways, and after development, think that the team has provided everything possible. However, there comes a reality that makes a tragicomedy out of the situation. 

The speech is based on a real case study of the development of the concept of integration interaction for 4+ systems with the results of industrial operation after 2 years.