Welcome to the forum first of all
I think this sentence addresses the main question I had :
If I understand correctly, then, TOSCA aims to be a kind of "meta" language ? I.e. if I write my orchestration in an
app.yml for Docker Compose, then it will be understood by a Docker cloud... I'm not sure if something similar exists for other cloud managers - but I know that's what Juju tries to do. Let me try to express my question better :
If I express my application or service in a TOSCA template, where will it be executable ? IE, what does one have to do to a typical cloud site to allow it to interpret a TOSCA template and then build the service topology ?