Where can I check Apple system status (services / stores / iCloud)?

Where can I check Apple system status (services / stores / iCloud)?

Apple provides a support page with real-time status information for its services, stores and iCloud. Each individual system is monitored and will indicate whether or not there's a problem.

Along the bottom is a detailed timeline of known issues. Access the Apple Support system status page at the following URL:

http://www.apple.com/support/systemstatus/