Amazon already offers more than enough to justify the $99 per year payment for Amazon Prime. Not only has it expanded its two-day shipping to almost all relevant items on the Amazon.com store, but it now offers Prime Instant Video and more than 1 million songs.

Now, Amazon has announced that Prime members will also be able to save unlimited photos to their storage service. This service works similar to iCloud Photo Library, and will let users who do not have enough space on their mobile send photos to the cloud, to be opened on multiple platforms.

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Amazon Cloud Drive will store all of these images, backed by Amazon's cloud technology. This is one of the industry standard cloud services, meaning more security, more stability and more efficiency than a lot of the other cloud storage platforms.

Currently, Cloud Drive supports iOS, Android, Fire OS (tablet and phone), Mac and Windows. This basically makes it compatible with all services of any value. It also works on almost all Web browsers, meaning even Linux and Windows Phone users have some access to the service.

The holiday season is the most popular time of the year for photos and videos, according to head of Amazon Prime Greg Greeley. Even if this is a good reason for launching the service, it looks more to do with iCloud Photo Library and Office 365's unlimited cloud storage both upping-the-ante for other cloud services.

If both Microsoft and Apple are willing to undercut their cloud service, allowing users to not have limits on the storage amount, Amazon needs to get involved to stay relevant. Dropbox might also look to remove data caps, currently set at 1TB for $9.99 subscription.

Amazon is making Prime the go-to place for all of their small incentives. Even though most Amazon Prime users might not actively use their music service or watch a ton of movies on Prime Instant Video, if the service can draw in a few more people, it is worth the free pass.

TagsAmazon, Prime Photos, cloud storage service, photo storage