After 11 hours, the outage affecting several of Apple's online services, including the iTunes Store and iOS and Mac App Stores, has ended.

The service disruption began just before 5 a.m. EDT Wednesday morning, and customers found themselves unable to purchase or download items from iTunes, the App Store, or the iBooks Store. The outage also disrupted iCloud sign in and Mail, though most iCloud services remained unaffected.

Apple apologized for the outage, saying that it was due to a DNS issue. Apple's system status page now reads all-clear, with the issues apparently resolved a little after 4 p.m. EDT.

Source: Apple