Visualforce

Note For new development, Salesforce recommends using Lightning Experience low-code tools and Lightning web components over Visualforce for the most modern, performant, and responsive functionality. See Why Should I Use Lightning Web Components instead of Visualforce?

With Visualforce you can:

• Create custom user interfaces that easily use standard Salesforce styles
• Create custom user interfaces that completely replace the standard Salesforce styles
• Build wizards and other navigation patterns that use data-specific rules for optimal, efficient application interaction

Visualforce comes with a rich component library that allows you to quickly build pages without having to create so much functionality yourself. In the Visualforce markup language, each tag corresponds to a coarse or fine-grained component, such as a section of a page, a related list, or a field. The components can either be controlled by the same logic that is used in standard Salesforce pages, or developers can associate their own logic with a custom controller or controller extension written in Apex.

• Visualforce Pages
  Visualforce pages are the top level container for custom apps built with Visualforce. Create Visualforce pages by adding Visualforce components (standard or custom), static HTML markup, and CSS styles and JavaScript to the page.
• Visualforce Components
  Visualforce components are small, reusable pieces of functionality—think widgets, panels, user interface elements, that kind of thing—that you use in Visualforce page markup. You can use standard Visualforce components, and create your own custom components.
• Static Resources
  Static resources allow you to upload content that you can reference in a Visualforce page, including archives (such as .zip and .jar files), images, style sheets, JavaScript, and other files. Static resources can be used only within your Salesforce org, so you can’t host content here for other apps or websites.