They'll serve quite a lot of traffic for those as well. I've seen quite a few people recommend a combination of Amazon S3 and Cloudfront for hosting static sites.
Cloudfront is AWS's CDN, and isn't related to CloudFlare.
Typo. meant Cloudflare.
The same applies to free tier, I need 5x less server power thanks to cloudflare and I get it for free! Including other useful things.