I'll fully admit I'm not as well versed in web programming as it's not my specialty, but aren't serverless functions (e.g. AWS Lambda) essentially the same conc

I'll fully admit I'm not as well versed in web programming as it's not my specialty, but aren't serverless functions (e.g. AWS Lambda) essentially the same concept? I understand that they can solve the problem of horizontal scale as they are spawning a container rather than just a process, but surely if you started with CGI scripts it would be easier to move if you needed to at a later date.