+1 for Bunny, if you cannot take advantage of a free tier somewhere and have to pay. Setup a client of mine on it for video and images, real-time image modifying/branding, smooth video playback (without using a special product) all using the equivalent of presigned URLs - for a surprisingly low amount of money each month. Lots of good stuff going on there.

They also have their own storage options that are tightly integrated to their CDN, but basic FTP and simple API for it still. No S3 or bulk options there yet. Promised S3 API support “soon” though