JAMstack is a modern approach to building websites and apps that enhances performance, security, scalability, and developer experience by leveraging client-side functionality and third-party APIs. It shifts traditional web development paradigms by offloading complex tasks to specialized services, such as authentication and media optimization, while ensuring ease of use and compliance with industry standards. Key services include Auth0 for authentication, Firebase for backend services, Cloudinary for media management, Netlify for instant deployment, Backendless for API management, Typeform for form processing, and Contentful for content management. Each of these services offers comprehensive documentation and integration capabilities to streamline the development process, supporting the creation of high-speed, efficient applications.