Original discussion material:
0. Use case draft collection</br> Etherpad: https://etherpad.opnfv.org/p/multisite_usecase_collection
1. Use case 1: multisite identity service management
2. Use case 2: VNF high availability across VIM
3. Use case 3: Multisite VNF Geo site disaster recovery
4. Use Case 4, 5:
5. Candidate solution for gap analysis