This thesis delves into the software architecture's dynamic evolution, with a particular focus on the paradigm shift from monolithic applications to the world of microservices and, subsequently, microfrontends. It analyses into the root causes driving the migration away from monolithic architectures, particularly examining the challenges and rewards associated with this transition. This analysis sheds light on the transformative power of microservices in providing agility, scalability, and resilience that are crucial qualities for building successful software in today's dynamic world. Building upon this foundation, the thesis invesitgates the evolution journey from microservices to microfrontends. It explores the strategic advantages of decoupling user interfaces from backend services.