In 2016, we learned that the emerging ecosystem of containers, microservices, and cloud scalability is not a fad. Containerized applications share a single instance of the OS, rather than running copies of an OS like VMs do. Because applications can be abstracted from the operating system, it’s easier to patch one without necessarily impacting the other. Microservices are the modern method to create web and mobile applications: You break down functionality into separate mini-applications that are loosely coupled by RESTful APIs.”]
Source: https://www.csoonline.com/article/3157423/got-microservices-youd-better-secure-them.html