From what I noticed, they do pretty much the same thing, provide services in form of IoC/DI. However, IAmbientServices has a member of type ICompositionContext. I don't really get the difference between the two of them and why are they aggregated this way?
What is the difference between AmbientServices and CompositionContext in Kephas?
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The concise answer is: the
ambient servicescontain services registered before the IoC/DI/composition container is built, while thecomposition contextis the root container for the IoC/DI, and itself is a service registered into theambient services.As a side note, all the services registered in the
ambient servicesare later registered automatically also in the DI container, includingIAmbientServices, so they are available for composition, too.Examples for ambient services:
As a general rule of thumb, prefer using services registered in the DI container, you will need very rarely ambient services.