Amazon Photos is an underrated perk of Prime membership. Here's what to know about the photo storage service.

• Amazon Photos is one of the benefits included with Amazon Prime membership. 
• Amazon Photos offers unlimited storage of all your photos, and up to 5GB of video storage.
• Access your Amazon Photos from the web, mobile app, or Amazon devices like Fire TV and Echo Show.

If you subscribe to Amazon Prime, you also automatically get Amazon Photos, which includes unlimited online storage for all your photos. It's one of many benefits that comes with Prime membership and often overlooked amid free or expedited shipping and various discounts.