01 
Authorization Server
These APIs are used by users -providers and consumers to give and get authorized access to data using tokens, policy etc. These APIs requires valid token or client details for authentication.
02 
Catalogue Server
The Catalogue is DXs' (Data Exchange) dataset discovery portal and metadata store.For search and discovery, it allows users search through text and geo-based queries
03 
Onboarding Resource Server
The Onboarding is DXs' (Data Exchange) enables Providers of datasources to describe them with DX based annotations to make discovery and consumption of data both automatable and semantically describable.
04 
fhir
This server provides a complete implementation of the FHIR Specification using a 100% open source software stack.