Any given business or an organization entity is built with resources. It can be human capital, digital assets, services and products. These activities often interact with each other creating a value network. Human resources interacting with digital assets to perform a service is a good example. We as computer scientists were trying to simplify this interaction flow for a quite sometimes. Field of distributed systems and semantic web are dedicated to solve problems in this domain. With RESTful services and the ecosystem around it now have simplified this interaction to a great level. Being able to interact with a resource with basic actions in a secure manner is a great achievement. This webinar will discuss the of history on ROA, current landscape, ROA and microservices and some new developments around the architecture pattern.