Probably the most public of cloud outages, the now-infamous T-Mobile Sidekick outage of October 2009. A number of T-Mobile customers and Sidekick users lost personal data such as contacts and calendar items and data that was hosted in the cloud. The data was lost due to a failure in the Microsoft Danger servers that provide the Sidekick service. To make matters worse, Microsoft soon after said that most of the data had been restored and also started offering Sidekick data recovery tools. Meanwhile, T-Mobile said a number of affected Sidekick users were without their cloud-hosted data. To make up for the folly, T-Mobile offered impacted Sidekick users a $100 T-Mobile gift card and a month of free data service.