Gatsby can make fast and secure business websites for several reasons.

1. Static site generation: Gatsby generates static HTML files for each page of a website during build time. This means that the website is pre-built and can be served directly to the browser without the need for server-side rendering. This results in faster loading times and improved performance, as there's no need to wait for a server to process requests and send back data.

2. Code splitting: As mentioned earlier, Gatsby uses code splitting to optimize the performance of the website. By only loading the code that is necessary for a particular page, Gatsby reduces the amount of data that needs to be downloaded and parsed, which results in faster loading times.

3. Progressive image loading: Gatsby uses a technique called "progressive image loading" to ensure that images are loaded efficiently. This means that low-resolution versions of images are loaded first, followed by high-resolution versions as they become available. This results in a faster and more seamless experience for users, as they don't have to wait for large images to load before they can start using the website.

4. Security: Because Gatsby websites are static, there's no server-side code to exploit. This makes them less vulnerable to attacks, as there's no database or back-end system for attackers to target. Additionally, because Gatsby generates static HTML files, there's no need for sensitive data to be transmitted between the server and the client, which helps to further improve the security of the website.

In conclusion, Gatsby's focus on performance and security, combined with its use of static site generation, code splitting, and progressive image loading, make it a great choice for building fast and secure business websites. Whether you're building a personal blog, an e-commerce site, or a complex web application, Gatsby can help you create a business website that is fast, responsive, and secure.

If you need a fast and secure business website, hire a Gatsby Development Agency like fastweb.dev. They can help you create high-performance business websites optimized for Google's Core Web Vitals—to boost your business website's search ranking and improve conversion rates.