Microservices

Also, monolithic applications are more difficult to scale. When a monolithic application reaches a limitation of its capacity, such as data throughput, or some other bottleneck, the only practical alternative is to deploy another complete iteration of the entire monolithic application — managing traffic between the instances using load balancers. By comparison, it is possible to scale only the services of a microservice application by adding container instances of only those services. This makes microservice scaling far more resource-efficient than scaling applications using a monolithic architecture.

Microservices make it easier to test and deploy changes. Because each service is separated from the others, fault isolation is improved. If there is a problem in the software, the problematic service can be isolated, remediated, tested and redeployed without the need to regression test the entire application as with traditional monolithic application architectures. Microservice architectures enhance business agility with faster software development and deployment compared to monolithic software architecture.