Airbnb has grown significantly over the last 3 years. To support demand, the company uses 200 Amazon Elastic Compute Cloud (Amazon EC2) instances for its application, memcache, and search servers. Within Amazon EC2, Airbnb is using Elastic Load Balancing, which automatically distributes incoming traffic between multiple Amazon EC2 instances. To easily process and analyze 50 Gigabytes of data daily, Airbnb uses Amazon Elastic MapReduce (Amazon EMR). Airbnb is also using Amazon Simple Storage Service (Amazon S3) to house backups and static files, including 10 terabytes of user pictures. To monitor all of its server resources, Airbnb uses Amazon CloudWatch, which allows the company to easily supervise all of its Amazon EC2 assets through the AWS Management Console, Command Line Tools, or a Web services API.
In November 2012, Airbnb acquired NabeWise, a city guide that aggregates curated information for specified locations. The acquisition shifted the company focus toward offering hyperlocal recommendations to travelers. That same month, Airbnb launched "Neighborhoods", a travel guide of 23 cities that provides in-depth information via collaborative filtering to help travelers choose a neighborhood in which to stay based on criteria such as public transportation, dining, peace & quiet, nightlife, tourist attractions, and shopping.
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On July 20, 2011, American announced an order for 460 narrowbody jets including 260 Airbus A320s. The order broke Boeing's monopoly with the airline and forced Boeing into the re-engined 737 MAX. As this sale included a Most-Favoured-Customer Clause, the European airframer has to refund any difference to American if it sells to another airline at a lower price, so Airbus can't give a competitive price to competitor United Airlines, leaving it to a Boeing-skewed fleet.
In May 2017, American announced they would be adding more seats to some of its Boeing 737 MAX jetliners and reducing overall legroom in the basic economy class. The last three rows will lose two inches; going from the current 31 to 29 inches. The remainder of the economy cabin will have 30 inches of legroom. This compares to JetBlue with 34 inches of legroom and Spirit with 28 inches.
American Airlines is one of the world's largest airline by size, revenue, and the number of passengers carried. It is a founding member of Oneworld, the third largest airline alliance in the world with partners like British Airways, Iberia, and Finnair. The airline offers flights to 350 destinations in 50 countries around the world, averaging nearly 6,700 flights each day.