A method includes receiving a problem report from a customer via an access interface of a plurality of access interfaces at a first horizontal layer of a problem management system, wherein the problem report indicates that the customer is having a problem with one of the network-based services, receiving a request from the customer for self-service problem resolution via the access interface, identifying a workflow related to the problem, obtaining the workflow from a second layer of the problem management system, providing a diagnostic tool to the customer via the access interface, according to the workflow, and providing the diagnostic tool to an agent via another access interface after the customer contacts the agent.