The main advantage of using a microservices architecture in software development is its ability to enhance scalability and maintainability. In a microservices model, an application is built as a collection of loosely coupled services, each responsible for a specific function. This allows teams to develop, deploy, and scale individual services independently, improving development speed and flexibility. As a consequence, organizations can respond promptly to changing business requirements, facilitate continuous integration and delivery, and enhance overall system resilience by isolating issues within specific services.