Lightning Web Components is a new programming model for building Lightning components. It leverages web standards breakthroughs, can coexist and interoperate with the Aura programming model and delivers unparalleled performance.
To create and develop Lightning Web Components and leverage their powerful features and performance benefits, you need to set up Salesforce DX.
For this Quick Start, you also use the Visual Studio Code, which is the recommended Salesforce development environment. Once your developer environment is ready, you learn how to write a simple Lightning web component and add it to a page in Lightning Experience.
Lightning Web Components uses core Web Components standards and provides only what’s necessary to perform well in browsers supported by Salesforce. Because it’s built on code that runs natively in browsers, Lightning Web Components is lightweight and delivers exceptional performance.