If you're a consumer, Google Photos offers unlimited (optimized) photo storage and delivery for free. If you're a Developer, the number one service for uploadi

If you're a consumer, Google Photos offers unlimited (optimized) photo storage and delivery for free. If you're a Developer, the number one service for uploading and delivering images (and most types of files) is Filestack. They offer a free plan, and scale all the way up to Enterprise plans that handle some of the top brands worldwide.