Kinesis is a service related to real-time processing of streaming data. It buffers data into a storage system with checkpoints to absorb the data into the Redshift cloud data warehouse. Users can store and process large datasets each hour from various sources like financial transactions, social media feeds, location-tracked events etc. With Kinesis, business customers can write applications, generate alerts, and make other decisions virtually apart from retrieving the stored data back instantly. According to Amazon, Kinesis can support applications and data streams of any size while replicating across multiple availability zones. Kinesis has been positioned as an answer to big data, with a “pay-as-you-go” pricing.
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http://www.zdnet.com/kinesis-amazon-web-servicess-answer-to-big-data-7000023223/