At the beginning of this chapter, we quickly saw an overview of what microservices are and how they benefit organizations by making it easier to manage and deploy independent services. We looked at an example of a geolocation tracker application to see how it can be broken down into smaller and manageable services. Next, we saw how to create the GeoLocationTracker service using the Spring Boot framework. We also learned how to expose our APIs that consume and read geolocations using Spring MVC. Next, we saw how to build the same application using WildFly Swarm, and JAX-RS. Later, we built the same application using Dropwizard. Finally, we saw how to implement the same service using the SparkJava framework.

I hope you now have a good understanding of what microservices are and how to create them using your favorite framework. The choice of framework completely depends on your needs and your current ecosystem. We strongly recommend you evaluate them before picking one. In the next chapter, we will learn how to package this microservice and later containerize it using Docker.