By using AWS, Change Healthcare can develop and test new services for its customers quickly, and it can scale to meet large demand while minimizing IT costs and complexity. Change Healthcare—previously known as Emdeon—is the largest health administrative network in the United States, processing claims, pharmacy requests, and performing other functions for more than 340,000 physicians and 60,000 pharmacies. Change Healthcare uses AWS services like Amazon EC2, Amazon S3, Amazon SQS, and Amazon SNS to handle millions of confidential transactions daily from its clients while maintaining with full compliance with healthcare industry regulations, including HIPAA.