The container is the unit of software that packages code and its dependencies so that the application runs quickly and reliably across computer networks. So u can say that virtual machines and containers are the two ways of deploying multiple isolated services on a single platform, now speaking about the difference between VM and containers is that the VM runs on top of emulating software called a hypervisor whereas containers run on top of physical servers and it hosts operating systems. to know better note that a hypervisor is computer software, firmware or hardware that creates and runs virtual machines. Applications running on a VM system can run different OS while the applications running on a container environment share a single OS.So the key difference between VM and containers is that a VM virtualizes the Computer system while the container visualizes the operating system only, and therefore VM is very large while the size of the container is very light examples of the containers are as follows Containers by Docker, PhotonOS, RancherOS. So the main question that might arise is that when there were VM then what was the need for conatiners ? Containers require fewer resources than traditional or hardware VM environments because they don't include operating system images. An application running in a container can be deployed easily to multiple different operating systems and hardware platforms.