Bolt.new is an AI-powered web development tool by StackBlitz that enables users to build, edit, and deploy full-stack web applications directly in a browser. It uses generative AI to create complete codebases from prompts, supports both frontend and backend development, and offers deployment features. This tool is particularly useful for web developers, AI automation agencies, and learners who want to streamline their development process, save time on boilerplate code, and leverage AI assistance to create high-quality, scalable web applications efficiently.