The concept of a microservice perfectly fits the structure of a serverless function, which easily enables deployment and runtime isolation for different services. On the storage side, services such as DynamoDB also make it easier to have independent databases for each microservice and scale them independently (when required or desirable).
Before we dive into details, please consider whether the benefits of Microservices abundantly outweigh its disadvantages for your particular project and team. Please, please don’t pick it because “it’s the trend.” More often than you may think, a Monolith is better and can be a “majestic” choice.