Docker refers to an open-source type of project that allows automation in deploying of various applications in the form of self-sufficient and portable containers. It operates virtually at any place and on almost every type of online server.
According to CS and IT professors of Shri Ram Institute of Technology, a well-known engineering college in India, docker is a lightweight alternative solution to complete machine virtualization offered by large numbers of traditional hypervisors, like KVM, Xen and ESXi powered by VMware.
According to traditional hypervisor approach, each of the virtual machines requires operating system of its own. However, with the help Docker, applications are easily operable within a container residing over single host type of operating system that acts as most of the different containers.
Experts have designed Docker containers to operate easily on everything, where it is physical computer system or any other virtual machine, bare-metal type of server, public instance, clusters of Open Stack Cloud and many more. In addition, docker is responsible for extension of Linux containers format that delivers an entirely isolated environment to perform various applications by allowing image deployment and management services.
After this, experienced CS and IT professors of our engineering college in India have explained about DDC i.e. Docker Datacenter. DDC refers to a container management as well as deployment service-based project offered by Docker project.
Main role of DDC is to help business enterprises to enhance their speeds to match perfectly with Docker-ready platforms. IT scholars also call Docker Datacenter tool as a type of fully integrated and end-to-end platform that allows agile application development and agile management at almost every scale.
In terms of real world, Docker Datacenter acts as a type of CaaS (Container as a Service) setup in any company, where professionals working in the IT department may store and create Docker images, while code jockeys may test and create applications within containers present on their desktop or laptop. Finally, administrators zip such images onto servers present in corporate data center or over the virtual machines present in cloud to bring them in proper production.