Explanation: Amazon ElastiCache is a web service that makes it easy to deploy and run Memcached or Redisprotocol-compliant server nodes in the cloud. Amazon ElastiCache improves the performance of webapplications by allowing you to retrieve information from a fast, managed, in-memory cachingsystem, instead of relying entirely on slower disk-based databases. The service simplifies and offloadsthe management, monitoring and operation of in-memory cache environments, enabling yourengineering resources to focus on developing applications. Using Amazon ElastiCache, you can not only improve load and response times to user actions andqueries, but also reduce the cost associated with scaling web applications. Reference: https://aws.amazon.com/elasticache/faqs/