Can you do a small write-up on that lambda function? I know nothing about those, but I know that Netlify kind of? supports them? If possible I'd like to set up

Can you do a small write-up on that lambda function? I know nothing about those, but I know that Netlify kind of? supports them? If possible I'd like to set up an end point on my Netlify deployed site and do what you are doing. Thanks! :)