Because it's basically free webhosting and you don't need to manage registering a domain?
I don't know for sure, but that's my guess. You could achieve something similar with S3, but you need a credit card attached, and then you need to worry about whose credit card, and what if it gets unexpected traffic and who will pay...
You could use Google Sites as well, but then you need to buy a domain, which again means requiring a credit card, and whose responsibility is it to pay and for how many years?
I don't think it's mostly about the cost, I think it's mostly about just not having to link a credit card?
I don't know for sure, but that's my guess. You could achieve something similar with S3, but you need a credit card attached, and then you need to worry about whose credit card, and what if it gets unexpected traffic and who will pay...
You could use Google Sites as well, but then you need to buy a domain, which again means requiring a credit card, and whose responsibility is it to pay and for how many years?
I don't think it's mostly about the cost, I think it's mostly about just not having to link a credit card?