The AWS issue seems to be limited to company's facilities in North Virginia, which was also a part of last year's massive outage in April. Amazon's EC2 and RDS services have been affected by the problem.
"We are investigating degraded performance for some volumes in a single AZ in the us-east-1 region," Amazon posted on its status website at 9:20AM IST.
Amazon outage also seems to have impacted Heroku, a division of Salesforce.
Amazon is one of the prominent infrastructure providers to Silicon Valley start-ups including Pinterest and DropBox.