Salesforce Aura Components
Salesforce Aura Components is the legacy JavaScript component framework for building dynamic web applications on the Salesforce platform. It provides a data binding model, event system, and Apex controller integration through the Aura framework. Salesforce recommends migrating to Lightning Web Components for new development, but Aura components remain fully supported and can coexist with LWC components on the same page.
Documentation
Documentation
https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/intro_framework.htm
GettingStarted
https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/qs_aotp_app.htm
APIReference
https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/ref_component_library.htm