Next.js 16 shipped in October 2025 with Turbopack stable, React Compiler support, Cache Components, and a redesigned caching model. If you are starting a new blog or content site today, this is the stack to use. This tutorial walks you through building a production-ready blog from scratch using Next.js 16 and Cosmic as your headless CMS. You will set up a content model in Cosmic, fetch posts with the TypeScript SDK, render them in Next.js 16 App Router server components, and deploy to Vercel. Estimated time: 30 minutes What You Will Build A blog with a homepage listing posts, individual post pages, and tag filtering — all powered by Cosmic's REST API and the TypeScript SDK. Prerequisites Node.js 20+ A free Cosmic account (no credit card required) A Vercel account for deployment (free tier is fine) Basic familiarity with React and TypeScript Step 1: Create Your Cosmic Bucket Log into Cosmic and create a new bucket. Go to Object Types and create a new type called blog-posts .…