Amazon on Tuesday expanded its Prime Photos cloud storage service with a new feature it's calling Family Vault.

As you may know, one of the many benefits of Amazon's Prime subscription service is free, unlimited photo storage. With its latest perk, Family Vault, Prime members can now invite up to five friends or family members to use Prime Photos without having to be a subscriber.

Family Vault members will also get unlimited storage of photos as well as an additional 5GB of storage for videos and other files. Anyone with access to a Family Vault can also upload images from their own devices.

The idea is to create a single repository where friends and family members can share and store their digital memories with each other. Prime Photos' new search technology also makes it easy to find photos as you can search for people, places or things portrayed in an image.

Last month, Amazon quietly launched a photo-printing service called Amazon Prints which allows Prime members to print individual photos and photo books at rates that significantly undercut the competition. Prime members can now order prints, double-sided cards and photo books of images uploaded to their Family Vault, regardless of which member shared them.

With Family Vault, Amazon is no doubt hoping to swipe some users away from popular photo-sharing services like Google Photos and Flickr.