*What is a relation between RIP OLA and RC OLA?* Generally, I can see two options: A1: RIP OLA relates to (additional) services that are operated by RIP in purpose of integrating RC's services/resources (delivered according RC OLA) into EGI Infrastructure. A2: RIP OLA relates to the whole RIP Infrastructure (including RCs) which is integrated into EGI Infrastructure. I believe clarification on this point let us better understand what are the relations between EGI, RIPs, RCs and who is responsible for what, and finally, help us decide what RIP OLA should include. For me A1 suggests the model in which EGI integrate RCs directly and RIPs are used as additional actors that maintain those RCs. On other hand, A2 suggests that EGI is a collaboration of RIPs which in turn is collaboration of RCs. Personally, I prefer the latter, hierarchical model. I believe it's also closer to idea of EGI.eu. Also, to understand better why/what kind of OLA we need, it is convenient to think what will be the results of singing such agreement. In case RC OLA, signing (or other way to consider OLA active) means that the RC is certified in the production infrastructure (under specific RIPs). Analogically, signing RIP OLA should result in considering the RIP as active entity in EGI.