Authored by Jack Phillips via The Epoch Times (emphasis ours),

My Photo Stream is an iCloud service that originally launched in 2011. What the service does is temporarily uploads photos taken on a device so they can be seen on another device with My Photo Stream enabled. It also allows users to import the pictures to that device.

Up to around 1,000 photos can be stored in My Photo Stream for about 30 days. They are then automatically deleted from Apple's iCloud.

But it will no longer be available in just a few days, and users are advised to save any photos they may have in that soon-to-be-deleted photo album.

Apple confirmed in a recent bulletin that My Photo Stream will be "shutting down" on July 26. It did not provide a reason for the shuttering of the service that was launched in 2011.