A solutions architect is designing storage for a web application that stores and displays engineering drawings. All components will run on AWS. The design must support caching to minimize load times and must be able to store petabytes of data. Which combination of storage and caching should the solutions architect use?

Amazon S3 is ideal for storing petabytes of object data, like engineering drawings, offering high durability and scalability. Amazon CloudFront is a global content delivery network (CDN) that caches content, including objects from S3, at edge locations closer to users. This significantly reduces load times for frequently accessed drawings, fulfilling the caching requirement. Amazon S3 Glacier is for archival storage, not for frequently accessed web application content. Amazon ElastiCache is an in-memory cache for databases or application data, not suitable for caching large static files like drawings. Amazon EBS volumes are block storage attached to EC2 instances, not a scalable or cost-effective solution for petabyte-scale object storage for a web application. AWS Storage Gateway connects on-premises applications to AWS cloud storage, which is not the primary use case for an all-AWS web application needing direct content delivery.