Can you explain the concept of microservices architecture and how it differs from a monolithic approach?

Microservices architecture is a modern software design approach that structures an application as a collection of small, autonomous services. Each service is designed to perform a specific business function and can be developed, deployed, and scaled independently. This question is commonly asked to assess a candidate's understanding of both architectural styles, their advantages, and limitations. Interviewers are looking for clarity in explanation and the ability to articulate the trade-offs involved in choosing one architecture over the other. A common misconception is that microservices are always better than monolithic architectures; however, the choice largely depends on the project requirements, team structure, and scalability needs. In practice, microservices can lead to faster deployment cycles and more resilient systems but may introduce complexity in management and communication between services. Therefore, candidates should understand the implications of both architectures in real-world applications, such as how large organizations implement microservices to improve agility while smaller teams might benefit from a simpler monolithic approach, especially in the early stages of development.