Proof Of Concept

Also known as the Walking Skeleton

Koppeltaal 2.0 has been developed by using an Agile methodology. The devised architecture is tested using POC applications. The applications used within the POC are not the applications that will ultimately be used when Koppeltaal 2.0 goes live.

Applications within the POC now often use IRMA to identify the user and relate across systems. This is not part of the standard. It's likely that Koppeltaal 2.0 will not use IRMA in the production environment.

The POC consists of the following type of applications:

Application type	Description
System component	Applications that form the core of Koppeltaal 2.0.
Supplier	A supplier who uses their non-production platform together with the PoC Koppeltaal 2.0 Server.
Pseudo-application	Application that mimics an e-health application.
Additional service	Application that is not part of the Koppeltaal standard, but helps during the development.

The POC consists of the following applications:

Application	Type	Description
Koppeltaal Server	System component	A FHIR HAPI R4 implementation for Koppeltaal.
Domain Management	System component	Applications can register to join a domain. A role is also assigned to applications, which determines what actions the application is allowed to perform on the Koppeltaal Server.
Auth Server	System component	Here - after approval from Domain Management - applications can request an access token via the Backend Services Authorization flow.
Koppeltaal IdP	System component	Identity Provider (IdP) used to validate that the launching user matches the logged in user. This essentially prevents tokens from being intercepted and executed.
Minddistrict	Supplier	Within this POC it functions as a "real" eHealth Module. This allows us to test concepts and implementations again a real system. This helps to test the concepts and ease of integration with an existing system.
EHR	Pseudo-application	This application is made to imitate an EHR. Ultimately, this has grown into an application where the common Koppeltaal Resources can be managed.
Portal	Pseudo-application	This application functions as a patient portal, practitioner portal and related person portal. When one logs in here (via the IdP, not with IRMA), the portal searches for a user by the logged-in e-mail address in the Koppeltaal Server. The role is determined depending on which resource is found (Patient, Practitioner or RelatedPerson). Anyone can create an account at the POC IdP. It is important that the IdP username is also set as an identifier in the user resource (system is ignored, so only the value has to match).
Domain Access Test Suite	Additional service	This test suite helps with the implementation of the Backend Services Authorization.
Launch Test Suite	Additional service	Can be used to test the HTI & SHOF launch.