Ultimate Docker Guide with Interview Preparation

DevOps is a combination of software development and information technology operations that enables businesses to deliver applications at a faster pace. It brings together development and operations teams so there are fewer redundancies in the software development process.

DevSecOps is a culture shift in the software industry that aims to bake security into the rapid–release cycles that are typical of modern application development and deployment.

DevOps has revolutionized workplaces in many ways. The number of DevOps–related jobs are increasing, while its rank as an in–demand job.

DevOps is important because it’s a software development and operations approach that enables faster development of new products and easier maintenance of existing deployments.

What is containerization?

Containerization is the packaging of software code with just the operating system (OS) libraries and dependencies required to run the code to create a single lightweight executable—called a container—that runs consistently on any infrastructure. More portable and resource–efficient than virtual machines (VMs), containers have become the de facto compute units of modern cloud–native applications.

What is Docker ?

Docker is a set of platform as a service products that use OS–level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well–defined channels.