Apple has updated its system status page
to reflect ongoing issues with eleven iCloud-related services: Back to My Mac, Documents in the Cloud, iCloud Account & Sign In, iCloud Backup, iCloud Drive, iCloud Keychain, iCloud Mail, iMovie Theater, iWork for iCloud Beta, Photos and Find My iPhone, iPad, iPod touch and Mac. The services have been affected since around 12 AM Pacific.
Multiple users have turned to Twitter and the MacRumors
discussion forums to confirm the issues, which range from services running slow for some users to being down entirely for others. The issues follow a prolonged iTunes and App Store outage
in early March and lengthy iTunes Connect and TestFlight downtime
for developers earlier this month.
Update 7:05 AM Pacific:
Apple's services are now restored per its system status page.