docs/get-started/learn/components/README.md - fuchsia - Git at Google

 # Fuchsia components

 A component is a program that runs on Fuchsia in its own sandbox.
 Each component is a composable module that interacts with other components
 through their capabilities. All software on Fuchsia is defined as a component
 except for the kernel image, bootstrapping processes, and the Component Manager.

 Fuchsia's component framework is responsible for running nearly all user space
 software in the system. The Component Manager is a system process that coordinates
 the execution and lifecycle of all component instances, maintains the component
 topology, provides components with their capabilities, and keeps them isolated
 from one another.

 Components obtain privileges to access various parts of the wider system through
 capabilities. Each component can declare new capabilities that they offer to the
 system and capabilities provided by other components (or the framework) that
 they require to function. Component Manager resolves and validates all capability
 requests between components to ensure they match capabilities that the component
 has been properly granted.

 <aside class="key-point">
 <b>Legacy components</b>

 <p>This section focuses on modern components whose manifest declarations are
 written in component manifest language (CML). The legacy framework based on
 <code>appmgr</code> and declared using CMX manifests is not covered here.

 <p>For more details on the legacy component framework, see
 <a href="/docs/concepts/components/v1">legacy components</a>.
 </aside>

 ## Prerequisites

 *   [Introduction to Fuchsia](/docs/get-started/learn/intro/README.md)
 *   [Building Fuchsia](/docs/get-started/learn/build/README.md)

 ## What you'll learn

 *   Fuchsia component design principles
 *   Declaring components and capabilities
 *   Testing and debugging a component

 ## What you'll need

 *   A development machine running Linux or macOS.
 *   A configured build environment with the
     [Fuchsia source code](/docs/get-started/get_fuchsia_source.md).
 *   A successful build of `workstation.qemu-x64`.
	# Fuchsia components

	A component is a program that runs on Fuchsia in its own sandbox.
	Each component is a composable module that interacts with other components
	through their capabilities. All software on Fuchsia is defined as a component
	except for the kernel image, bootstrapping processes, and the Component Manager.

	Fuchsia's component framework is responsible for running nearly all user space
	software in the system. The Component Manager is a system process that coordinates
	the execution and lifecycle of all component instances, maintains the component
	topology, provides components with their capabilities, and keeps them isolated
	from one another.

	Components obtain privileges to access various parts of the wider system through
	capabilities. Each component can declare new capabilities that they offer to the
	system and capabilities provided by other components (or the framework) that
	they require to function. Component Manager resolves and validates all capability
	requests between components to ensure they match capabilities that the component
	has been properly granted.

	<aside class="key-point">
	<b>Legacy components</b>

	<p>This section focuses on modern components whose manifest declarations are
	written in component manifest language (CML). The legacy framework based on
	<code>appmgr</code> and declared using CMX manifests is not covered here.

	<p>For more details on the legacy component framework, see
	<a href="/docs/concepts/components/v1">legacy components</a>.
	</aside>

	## Prerequisites

	* [Introduction to Fuchsia](/docs/get-started/learn/intro/README.md)
	* [Building Fuchsia](/docs/get-started/learn/build/README.md)

	## What you'll learn

	* Fuchsia component design principles
	* Declaring components and capabilities
	* Testing and debugging a component

	## What you'll need

	* A development machine running Linux or macOS.
	* A configured build environment with the
	[Fuchsia source code](/docs/get-started/get_fuchsia_source.md).
	* A successful build of `workstation.qemu-x64`.