Many applications are traditionally built using the monolithic architecture in which the entire code base is part of one single unit which is tightly coupled and interconnected. This design poses a challenge when it is required to scale, maintain, and update the application because any changes or additions will require modifying the entire codebase. In order to address this issue, microservices architecture divides the entire application into independent and loosely coupled components that can be scaled and changed individually without impacting other components. This chapter explores the idea, characteristics, advantages of microservices architecture, highlighting how they evolved from monolithic systems. It gives insights into microservice design, operational problems and best practices, along with real-world examples from industry giants. This chapter also delves into the changing landscape of microservices architecture where upcoming technologies like serverless computing, edge computing, and AI integration are explored. Furthermore, the chapter describes the development of a blog posting application utilizing the microservices architecture, including many services for managing functionality such as authentication, publishing, and commenting. It provides a practical approach for developers looking to efficiently use microservices.