Amazon's technology

Customer Relationship Management (CRM) and Information Management (IM) support Amazon’s business strategy. The core technology that keeps Amazon running is Linux-based. As of 2005, Amazon had the world’s three largest Linux databases, with capacities of 7.8 TB, 18.5 TB, and 24.7 TB. The central data warehouse of Amazon is made of 28 Hewlett Packard Enterprise servers with four CPUs per node running Oracle database software. Amazon’s technology architecture handles millions of back-end operations every day, as well as queries from more than half a million third-party sellers. With hundreds of thousands of people sending their credit card numbers to Amazon’s servers every day, security becomes a major concern. Amazon employs Netscape Secure Commerce Server using the Secure Socket Layer protocol which stores all credit card details in a separate database. The company also records data on customer buyer behavior which enables them to offer or recommend to an individual specific item, or bundles of items based upon preferences demonstrated through purchases or items visited.^[91]
On January 31, 2013 Amazon experienced an outage that lasted approximately 49 minutes, leaving its site inaccessible to some customers.^[92]
On May 5, 2014 Amazon unveiled a partnership with Twitter. Twitter users can link their accounts to an Amazon account and automatically add items to their shopping carts by responding to any tweet with an Amazon product link bearing the hashtag #AmazonCart. This allows customers to never leave their Twitter feed, and the product is waiting for them when they go to the Amazon website.^[93]