Software as a Service (SaaS) is a modern software product model that provides an awesome experience and dynamic platform for the expedition, communication and creating new features in a short amount of time. Cloud platforms provide an outstanding foundation for Software as a solution with their on user-demand infrastructure and application service. We can say that microservice architecture as the optional architecture for a cloud-hosted solution. Microservice architecture is not that much build-up, it just started getting attraction from various industries who want to market for their product in a short time by expanding productivity through increasing automation in the whole product lifecycle[1]. Microservice architecture approach come-up with lots of new complexity and it need a certain level of maturity development to confidently apply the architectural style. The challenge we are facing is how do we make sure the system stays safe and doesn't get hacked or leak data in this more complex and versatile cloud environment. Hence, we need to do penetration testing on the newly developed application in a microservice architecture.