What Ubuntu gives for developers and others?
Ubuntu One personal cloud service provides every Ubuntu user with free storage space and the option to buy more for music and photos. But for developers, Ubuntu One offers much more. The U1DB cloud-syncing database provides APIs to sync any kind of data to the cloud.Ubuntu One enables you to develop integrated, differentiating services, without the need to maintain your own infrastructure. Among its features is an integrated identity management service, enabling you to manage identity, payments and service activation securely.