The JAMstack is not about specific technologies. It’s a new way of building websites and apps that delivers better performance, higher security, lower cost of scaling, and a better developer experience. [ https://jamstack.org ]
JAMStack does not rely on databases like Wordpress, Joomla, Drupal, and other CMS platforms. The fact that JAMstack websites don’t have to make any calls to a database and no more server-side programming language has to be executed makes the loading time quicker. Page speed matters to Google & Visitors.
With no databases, plugins, or dynamic software running on your server, the potential for code injection and hacks is reduced enormously. When a user requests a page from your site, the server just sends them the file for that page, instead of building that page from various assets each time.
We’re not dealing with expensive runtimes or complicated server setups - we’re only dealing with static files being served on the client side. You can reduce overall cost significantly. It can be served over a CDN allowing our websites to be almost infinitely scalable.
Low maintenance efforts. No regular updates and backups required. Just imagine no need to upgrade WordPress or plugins. Read about how Smashing Magazine just got 10x faster.