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Sven Dowideit 522e631096 I was talking to someone whom i listen to, and she noted that our docs don't mention the license
Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>
2014-12-05 21:06:11 +10:00

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page_title: About Docker
page_description: Introduction to Docker.
page_keywords: docker, introduction, documentation, about, technology, understanding, Dockerfile
# About Docker
**Develop, Ship and Run Any Application, Anywhere**
[**Docker**](https://www.docker.com) is a platform for developers and sysadmins
to develop, ship, and run applications. Docker lets you quickly assemble
applications from components and eliminates the friction that can come when
shipping code. Docker lets you get your code tested and deployed into production
as fast as possible.
Docker consists of:
* The Docker Engine - our lightweight and powerful open source container
virtualization technology combined with a work flow for building
and containerizing your applications.
* [Docker Hub](https://hub.docker.com) - our SaaS service for
sharing and managing your application stacks.
## Why Docker?
*Faster delivery of your applications*
* We want your environment to work better. Docker containers,
and the work flow that comes with them, help your developers,
sysadmins, QA folks, and release engineers work together to get your code
into production and make it useful. We've created a standard
container format that lets developers care about their applications
inside containers while sysadmins and operators can work on running the
container in your deployment. This separation of duties streamlines and
simplifies the management and deployment of code.
* We make it easy to build new containers, enable rapid iteration of
your applications, and increase the visibility of changes. This
helps everyone in your organization understand how an application works
and how it is built.
* Docker containers are lightweight and fast! Containers have
sub-second launch times, reducing the cycle
time of development, testing, and deployment.
*Deploy and scale more easily*
* Docker containers run (almost) everywhere. You can deploy
containers on desktops, physical servers, virtual machines, into
data centers, and up to public and private clouds.
* Since Docker runs on so many platforms, it's easy to move your
applications around. You can easily move an application from a
testing environment into the cloud and back whenever you need.
* Docker's lightweight containers also make scaling up and
down fast and easy. You can quickly launch more containers when
needed and then shut them down easily when they're no longer needed.
*Get higher density and run more workloads*
* Docker containers don't need a hypervisor, so you can pack more of
them onto your hosts. This means you get more value out of every
server and can potentially reduce what you spend on equipment and
licenses.
*Faster deployment makes for easier management*
* As Docker speeds up your work flow, it gets easier to make lots
of small changes instead of huge, big bang updates. Smaller
changes mean reduced risk and more uptime.
## About this guide
The [Understanding Docker section](introduction/understanding-docker.md) will help you:
- See how Docker works at a high level
- Understand the architecture of Docker
- Discover Docker's features;
- See how Docker compares to virtual machines
- See some common use cases.
### Installation Guides
The [installation section](/installation/#installation) will show you how to
install Docker on a variety of platforms.
### Docker User Guide
To learn about Docker in more detail and to answer questions about usage and
implementation, check out the [Docker User Guide](/userguide/).
## Release Notes
A summary of the changes in each release in the current series can now be found
on the separate [Release Notes page](/release-notes/)
## Licensing
Docker is licensed under the Apache License, Version 2.0. See
[LICENSE](https://github.com/docker/docker/blob/master/LICENSE) for the full
license text.