In order to keep track of these Big Services (Volume and complexity) is no easy task, and there is a need for software to help you do this. The software needs to provide repository services and a level of abstraction that ensures you work at solving the business problem at hand and not the complexity of the services call. Naturally the software needs to take care of error handling (like what to do if the service is unavailable), monitoring (like checking if the API is available and the average time per call), lifecycle management (like which version of the service to call) and a host of other service security and dependency checking needs. It comes down to whether you have time to build this software of buy it from a trusted partner.
The following Big Data products are integrated into the webMethods services platfrom
Terracotta Terracotta DB Mongo DB