What are the main benefits of using Docker?

The main benefits of using Docker are portability, scalability, and efficiency. Docker allows consistent running of applications across diverse environments by packaging them with all dependencies. It simplifies deployment, reduces system conflicts, and speeds up development workflows. The lightweight containers further assure lower resource usage by Docker containers compared to virtual machines, hence ensuring better system performance. It further allows scaling applications much faster and is ideal for DevOps and CI/CD pipelines. A large ecosystem and support for microservices architecture make Docker support modular development. It easily rolls back to previous versions of the container, hence making the exercise of debugging and maintenance a piece of cake.