From Code to Browser: Front‑End Development, Build, and Deployment
Front‑end development transforms a URL request into a rendered page by downloading HTML, CSS, and JavaScript, building the DOM and CSSOM, executing scripts, constructing a render tree, then performing layout and paint, while modern workflows use component frameworks, build tools for bundling and minification, versioned or hashed assets with long‑term CDN caching, and non‑overlapping gray‑release deployments to ensure smooth updates.