A workload needs consistent moderate IOPS at the lowest cost, with the ability to provision IOPS independently of volume size. Which EBS volume type is the best general-purpose fit?
A) gp3 (General Purpose SSD).
B) st1 (Throughput Optimized HDD).
C) sc1 (Cold HDD).
D) Standard (Magnetic).
Correct Answer: A
Explanation: gp3 provides a 3,000 IOPS baseline and lets you provision additional IOPS and throughput independently of capacity, at lower cost than gp2 — the modern general-purpose default. (B) and (C) are HDDs for throughput/cold data. (D) Magnetic is legacy and low-performance. (For very high sustained IOPS with the highest durability, io2 Block Express costs more than needed here.)