Development agility

Microservices being handled by separate logical development streams makes it easier for a new developer to understand the functionality of a service and ramp up to speed. This is particularly useful in an agile environment where the team can constantly change and there is minimal dependency on an individual developer. It also makes code maintenance related tasks simpler as smaller services are much more readable and easily testable.

Often, large-scale systems have specific requirements which require specialized services. An example of this is a service which processes graphical data which requires specialized skills to build and test the service. If a development team does not have the domain knowledge to deliver this service, it can be easily outsourced or offloaded to a different team which has the required skill sets. This would be very hard in a monolithic system because of the interdependency of services.