A multi-tier permit system needs relational transactions, durable attachment storage, and fast session state for web servers. Which service mix best matches those tiers?
Select an answer to reveal the explanation.
Short Explanation
Give each floor the right furniture: Aurora for the permit ledger, S3 for the attachment attic, ElastiCache for quick session sticky-notes the web desks share. Using S3 as your OLTP database is the wrong floor plan.
Full Explanation
Purpose-built selection pairs Aurora (or RDS) with relational workloads, S3 with object attachments, and ElastiCache with shared ephemeral session state for scaled web tiers. Substituting object storage for OLTP or relying on instance-local session storage breaks consistency, durability, or scale-out assumptions.