All of those things cost money and effort to maintain. Im not a super AWS fanboy but each IaaS component is a feature that's easy-ish to do on your own with a server and some software. When you go server less or cloud native you have to really think about the bits of tech that bring real value.

If you look at the free tier limits, and monthly costs. Putting a simple rest app behind API gateway with a few buckets and a little lambda gives you a whole lot of bang for very little cost.

If you're a person in a region and your website is going to get bursty use by people in your region then it's a pretty cheap deal.

Monthly costs < 1 coffee for a blog or some non trivial page.