Amazon Glacier is a Low Cost Storage Service for Archival Purpose newly has been introduced by Amazon and pricing is on Pay as You Go model like the others. Amazon Glacier is for mass data storage with low configuration hardware behind and is not intended for serving files using GET request, unlike CDN. Amazon Glacier is probably more better if you have very volume of storage need as a backup service.
August 27, 2012
Please read more: Amazon Glacier : Low Cost Storage Service for Archival Purpose