@Suiseiseki HTML5 alone cannot replace JavaScript because it lacks the capability to handle events, manipulate the DOM in real-time, or perform asynchronous operations, which are essential for creating dynamic, accessible and interactive pages.
FastCGI, executing server-side, is computationally more expensive because it requires multiple web requests and can be more vulnerable to remote code execution and misconfigurations than client-side JavaScript.
CC: @tennoseremel @lxo