Service and data aggregation are very vital for the intended success of the MSA pattern. As services are relatively micro in size and typically a microservice implements a single task, multiple distributed and decentralized services need to be identified and aggregated to serve a fully-fledged business functionality and feature. The aggregator pattern is therefore essential for the MSA era. Since each service is exposed using the lightweight RESTful interface, an application, which comprises many microservices, can retrieve the data from different services and process/display it accordingly by using this aggregator pattern.
There are viable options to bring in the required business logic if there is ...