Visualforce is a web development framework that enables developers to build sophisticated, custom user interfaces for mobile and desktop apps that can be hosted on the Force.com platform. You can use Visualforce to build apps with user interfaces that look like the standard interface provided by Force.com , as well as your own completely custom interface. Visualforce enables developers to extend Salesforce ’s built-in features, replace them with new functionality, and build completely new apps. Use powerful built-in standard controller features, or write your own custom business logic in Apex . You can build functionality for your own organization, or create apps for sale in the AppExchange . Visualforce app development is familiar to anyone who has built web apps. Developers create Visualforce pages by composing components, HTML, and optional styling elements. Visualforce can integrate with ...