Can be developed to create customized components that extend the default functionality.
Because components are modular, you can:
Develop a new component on your local instance.
Deploy it to your test environment.
Deploy it to your live authoring environment, where they allow authors and/or administrators to add and configure content.
Deploy it to your live publish environment(s), where they are used to render content for visitors to your website.
Each AEM component:
Is a resource type.
Is a collection of scripts that completely realize a specific function.
Can function in isolation, meaning either within AEM or a portal.
AEM Core Components
The AEM Core Components are a set of standardized Web Content Management (WCM) components for AEM to speed up development time and reduce maintenance cost of your websites.
The Core Components are provided with AEM as a Cloud Service and the WKND Tutorial illustrates how to implement and use components. The components are provided with all source code and can be used as is or as starting points for modified or extended components.
Viewing Available Components
For an overview of all of the available components in your AEM instance, use the Components Console.
Alternatively, you can also use CRXDE Lite to get a list of all the components available in the repository.
In CRXDE Lite, select Tools from the toolbar, then Query, which opens the Query tab.