The combination of OSS, public cloud, and containerization gives a developer a virtually unlimited number of compute power combined with the ability of rapidly composing applications that deliver more than the sum of the individual parts. The individual parts that make up an application generally do only one thing, and do it well (take, for instance, the Unix philosophy).

The developer is now able to architect applications that are deployed as microservices. When done right, microservices, such as SOA, enable quick feedback during development, testing, and deployment. Microservices are not a free lunch and has various problems, which are listed in the 2014 article—Microservices - Not A Free Lunch! (you can read this article at http://highscalability.com/blog/2014/4/8/microservices-not-a-free-lunch.html). With the technologies we listed earlier, developers have the power of having their cake and eating it too, as more and more of the not free lunch part is available as managed services, such as AKS. The public cloud providers are competing by investing in managed services to become the go-to provider for developers.