What classes of applications benefit from that level of integration between processing and storage? It strikes me that both AWS and various PaaS providers (esp

What classes of applications benefit from that level of integration between processing and storage? It strikes me that both AWS and various PaaS providers (especially Heroku) encourage strong separatioin between the application and its storage. Applications are supposed to treat all persistent storage as network-attached, while the VMs or containers running the appliication are ephemeral. I guess you're saying this is untenable for some kinds of application.