Salesforce Classic
Salesforce Classic is the original user interface (UI) for the Salesforce Customer Relationship Management (CRM) platform, launched in 1999. It provides a tab-based, desktop-optimized interface for managing sales, service, marketing, and other business operations through customizable modules like accounts, contacts, leads, and opportunities. While functional and widely used for years, it has been largely superseded by Salesforce Lightning Experience, a more modern and responsive UI.
Developers should learn Salesforce Classic when maintaining or migrating legacy Salesforce implementations, as many older orgs still use it or have customizations built for it. It's essential for understanding the historical context of Salesforce development, including Visualforce pages, Apex triggers, and Classic-specific configurations. Use cases include supporting long-term clients with Classic deployments, troubleshooting migration issues to Lightning, or working with industries that adopted Salesforce early and have extensive Classic customizations.