In March 2019 the European Commission announced that the EWP standards will be mandatory from the beginning of the new Erasmus Programme in January 2021. The timetable they put forward was:
In practice there are 3 ways to do this:
A combination is possible, but you cannot combine tools for the same API service.
In practice, this means that HEIs can gradually introduce the changes, even though the EWP Network already has operational APIs for all of the processes in student exchanges as we speak. For a detailed description of the EWP APIs click here. Our third-party provider EWP partners (Mobility Online (AT), MoveON (UK), USOS (PL), Cineca (IT), Sigma (ES), FS (No)), have committed to implement all APIs in their business development plan, but the exact timetable is, of course, their own responsibility.
You could also start with one solution for a particular API service and later on change to another one, as long as you don't use two solutions for the same service.