Well the main idea behind Mesos is to create an aggregation layer that spans server capacity in local and remote datacenters. This aggregation does not tightly

Well the main idea behind Mesos is to create an aggregation layer that spans server capacity in local and remote datacenters. This aggregation does not tightly bind the servers into a shared memory system, but rather treats them like a giant resource pool onto which applications can be deployed. It is a bit like the inverse of server virtualization really.