A - V1.1 and V1.0 completely separate

B - V1.1 and V1.0 composite in the same domain

B-1 Just running in the same domain

Doesn't seem to be much advantage over independent operation

B-2 Running and interacting in the same domain

Either need both types of processors and a shared model or support the domain with the new distributed endpoint registry. The V1.1 and v1.0 runtimes remain separate and are run in separate nodes, i.e. you either start a 1.1 or a 1.0 node. A single node (our runtime) doesn't support both. Need an interoperable binding.sca (across v1.1 and v1.0)

Handling both v1.1 and v1.0 policies

Need policies in both namespaces represented. Create side by side defintions.xml files in extensions?

C V1.1 component implemented using V1.0 composite

Need both types of processors and a shared model. Need a shared runtime, i.e. some flexibility in builders, pluggable conversations and callbacks. Not sure about activation.

D V1.1 implemented using implementation.osoa (or similar)