RedShift is a fully managed data warehouse service designed to handle petabytes of data for
analysis. Data can be analyzed with standard SQL tools and business intelligence tools.
RedShift allows you to run complex analytic queries against petabytes of structured data
RDS is Amazon's transactional relational database
DynamoDB is Amazon’s non-relational database service
ElastiCache is a data caching service that is used to help improve the speed/performance of
web applications running on AWS