Containers vs. Virtual MachinesVirtualization is where one host computer can be turned into one or more pseudo-computers, known as virtual machines (VMs). Inside VMs, you can install an operating system and multiple applications.
A Docker container is similar to a virtual machine. It runs a pre-packaged application inside a container.
Virtualization decouples the application from the underlying hardware.
Containers, operating at a higher level, decoupling the application from the underlying operating system.
|Virtualization abstracts hardware, allowing multiple workloads to share a common set of resources. Virtualization allows multiple workloads to co-locate on the virtualized hardware, while maintaining full isolation from each other.|
|The hardware abstraction piece of virtualization is made possible by a portfolio of technologies such as Intel Virtualization Technology (Intel VT) and AMD Virtualization (AMD-V).
These technologies conscribe the hardware in the effort to reduce overhead (in cache, I/O, and memory), cost and complexity of virtualization. They enable the hardware to run multiple operating systems and applications in independent partitions, allowing one computer system to function as multiple virtual systems.
|Hardware virtualization technologies use hardware to do the job that virtual machine managers (VMM) do via software by incorporating virtualization extensions in a processor’s instruction set. The benefits include increased performance and scalability.|
|Hardware virtualization features include: