After the evolution of distributed systems, microservices-based applications attracted the interest of nearly every organization wanting to grow with time and survive the market competition. Microservices allows us to scale and manage systems easily. Development time reduced due to distributed effort among many teams and time-to-market new features reduced significantly.
Due to distributed nature, communication among different components is over the network. And there are so many factors that can affect communication, either it can be security, added latency, or abrupt termination of ongoing communication, leading to increased infrastructure cost. Hence either we can fix the network, which exists with numerous problems or we can architect our system to be resilient and reliable over time.