Amazon, which is the largest cloud provider, is notoriously secretive about the precise locations of its data centers. While a few are publicly tied to Amazon, this is the exception rather than the norm. More often, Amazon operates out of data centers owned by other companies with little indication that Amazon itself is based there too or runs its own data centers under less-identifiable subsidiaries such as VaData, Inc. In some cases, Amazon uses pseudonyms to obscure its presence. For example, at its IAD77 data center, the document states that “Amazon is known as ‘Vandalay Industries’ on badges and all correspondence with building manager”.