Shifter is a serverless WordPress hosting solution that pre-renders and serves HTML files via CDN, aiming to improve the speed and security of WordPress sites.` `The concept was discussed in an episode of JAMstack Radio with Daniel Olson and Shinichi Nishikawa, who are both involved in WordPress development and review processes.` `Shifter is being explored as a new use case for serverless technology, offering potential benefits such as improved performance and enhanced security for WordPress sites.