What are Microservices ? A dialect of service oriented architecure where the services are fine grained and loosely coupled. Also protocols for communication are lightweight. Whare are the major projects today in industry which are microservices ? Few companies which use microservices are : Comcast Cable,Uber,Netflix,Amazon,Ebay,Sound Cloud,Karma,Groupon. What are the problems in Service Oriented Architecture which microservices solved ? - Allows skill set flexibility : Multiple technologies can be used to develop the parts isolated. - Easy and less risky deployment : Replacing only the changed parts of the program. - Individual services can be scaled. - Application lifecycle flexibility : can develop individual services in isolation. - Overall user experience improvement What is a monolithic architecture ? In monolithic application all ther requirements of the application will be provided by a single application abstraction. So, Is there any threshold to consider