Fauna Cloud is a great companion for HTML app development, offering a secure database that scales from small experiments to powering global brands, with pay-as-you-go pricing and automatic scaling. With its JavaScript driver available via CDN for browser usage, Fauna allows developers to connect directly to the cloud database from their browser app, enabling zero-maintenance apps without backend changes when adding native app support. A social collaboration app was built using Fauna and deployed to Neocities, showcasing its capabilities in a real-world example. To run this app, developers can follow a step-by-step guide that includes installing the project's repo, setting up database keys, building the app bundle, and uploading it to Neocities. With Fauna, developers can enjoy a secure and scalable solution for their web applications.