Amazon Kinesis is one of the popular AWS services that many of AWS customers use to stream real-time data, and extract insights. Some of the top companies that use AWS Kinesis are:
Netflix, 3M, Staples, And many of the top companies use the Kinesis service to help extract insights from various data sources at real-time.
If you are interested in learning AWS, check out the AWS training course and watch the following video on AWS Kinesis Tutorial to get your fundamentals correct.