Storage provider "Microsoft Azure blob storage" - prices has been dropped to Amazon level in Nov 2011 - although both (Amazon S3 and Azure blob storage) provide a REST interface to access data it is not compatible --> this means re-coding of existing interfaces / how? / is there any comparision ?

Are experience how to enable AD federation in Azure for an existing Office 365 customer with E-Plan and already existing AD federation

Please share your thoughts / experiences