The point-to-point integration of different microservices is hard to achieve because of the different technology stacks that may be used by a particular microservice that is present in the infrastructure. This may cause individual connectors to be built for every pair of microservices in order to translate the data format of one microservice to another.

Another bottleneck happens because of the scalability of these services, since now the connectors have to connect every single instance of the deployed microservice.