Microservices is an architectural style that makes deploying services loose, cooperative, and independent possible. So, you can scale independently also. Regarding fault tolerance, since you can also deploy multiple replicated microservices, it helps to ensure it.

Microservices architecture boosts scalability and fault tolerance by enabling independent scaling of loosely coupled services, facilitating technology diversity for performance optimization, and allowing quick deployments. It enhances fault tolerance through failure isolation, service redundancy, distributed data management, and graceful degradation. This approach offers significant advantages for creating resilient, scalable applications, though it demands careful planning and management.

In the context of distributed systems, having a microservices architecture can promote continuous deployment and delivery practices, enabling development teams to update several decoupled services independently and more frequently without being delayed by other teams working on different software components/modules. This allows for timely response to changing system requirements, bug fixes, and security patches.