A media rendering company runs a fleet of EC2 instances that perform video transcoding. Each job downloads source files, writes large amounts of intermediate scratch data during processing, and uploads the final output to Amazon S3. The intermediate data is fully disposable and does not need to survive an instance stop or termination. The team reports that the intermediate write/read operations are bottlenecking performance and wants the highest possible local disk throughput at the lowest cost. Which storage option should the solutions architect recommend for the scratch data?