Amazon Redshift is AWS's fully managed, petabyte-scale data warehouse service designed specifically for large-scale data analytics workloads. It can handle petabytes of data and provides high-performance querying capabilities using columnar storage and massively parallel processing (MPP) architecture.

Why other options are incorrect:

• Amazon DynamoDB: A NoSQL database service for key-value and document data, not designed for petabyte-scale data warehousing
• Amazon RDS: A managed relational database service for OLTP workloads, not optimized for large-scale analytics
• Amazon ElastiCache: An in-memory caching service for improving application performance, not a data warehouse solution