This is the main component of CTS system, it has Console, API service, Event Processor, and Database.
CTS console provide UI for user to configure tracker, view tracers and other functionalities.
API service is the core of CTS, other cloud services integrate with CTS via API service, it provide tracker APIs, trace API.
Event processor take account for transfer trace record in database into OBS.
OBS is the short name of Object Storage Service.
Cassandra is CTS database.