Application development is a lot more than just writing code! They involve a lot of behind-the-scenes things like usage of multiple frameworks and architectures for every stage of its lifecycle which makes the process more complex and challenging. Using the nature of containerization helps developers to simplify and efficiently accelerate the application workflow along with giving them the liberty to develop using their own choice of technology and development environments.
All these aspects form the core part of DevOps which becomes all the more important for any developer to know these in order to improve productivity, fasten the development along with keeping in mind the factors of application scalability and more efficient resource management.
Imagine containers as a very lightweight pre-installed box with all the packages, dependencies, software required by your application, just deploy to production with minimal configuration changes.
Lots of companies like PayPal, Spotify, Uber, etc use Docker to simplify the operations and to bring the infrastructure and security closer to make more secure applications.
Being portable, Containers can be deployed on multiple platforms like bare instances, virtual machines, Kubernetes platform etc. as per requirements of scale or desired platform.
