Lightning App Builder

💬 In Plain Words: Salesforce has three generations of UI frameworks. Visualforce is the oldest (page-per-server-trip). Aura was the first component-based framework, but it is slow and heavy. Lightning Web Components (LWC) is the modern web standard and is vastly faster. The rule today is simple: All new custom development must be LWC. For declarative (no-code) development, use Lightning App Builder to assemble pages, and Dynamic Forms to put fields conditionally on a page without writing code. 📌 The Strategy Example: Imagine your org has a 2014 Visualforce quote PDF, complex Aura components built in 2018, and a brand new business requirement. The Verdict: Keep the Visualforce page (it's still the best engine for rendering PDFs). Leave the working Aura components alone, but freeze them (no new features). Build the new business requirement entirely in LWC. UI migration is a roadmap, not a reckless rewrite.

Lightning Web Components (LWC) provide a modern, lightweight standard for building performant custom interfaces in Salesforce. In this guide, we will step through creating, configuring, and deploying a foundational LWC component from your local environment directly into a Salesforce org using modern Salesforce CLI commands.