The JAMstack is a movement that pushes for a separation between client and server code, allowing different consumers to leverage APIs independently. This approach has several benefits, including fewer threat vectors when serving static content, making sites more portable, and reducing the need for servers. The trend towards isomorphic server-side rendering in JavaScript applications is being reevaluated, with some arguing it's not the right approach for solving the wrong problems. Server-side rendering can be beneficial for SEO, but this benefit may not outweigh the costs of running a server. In contrast, the JAMstack offers a cost-effective solution with scalability through CDNs, making it an attractive alternative to isomorphic server-side rendering. Progressive Web Apps (PWAs) are another option that can deliver amazing user experiences without the need for always-on servers. The key takeaway is that each approach has its pros and cons, and the choice ultimately depends on solving the right problems and meeting specific performance, speed, and cost requirements.