AWS EBS

gp2 3 IOPS per GiB - https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/general-purpose.html

gp3 500 IOPS per GiB - https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/general-purpose.html

io2 50:1 - https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/provisioned-iops.html#EBSVolumeTypes_piops

io3 500:1 - https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/provisioned-iops.html#EBSVolumeTypes_piops

gp2 Volumes 5,334 GiB and larger are provisioned with 16,000 IOPS.

gp3 Maximum IOPS can be provisioned for volumes 32 GiB or larger (500 IOPS per GiB × 32 GiB = 16,000 IOPS). A gp3 volume can range in size from 1 GiB to 16 TiB.

io1 volume 1,280 GiB in size or greater (50 × 1,280 GiB = 64,000 IOPS)

io2 volume 128 GiB in size or greater (500 × 128 GiB = 64,000 IOPS)

AWS re:Invent 2015 | (STG403) Amazon EBS: Designing for Performance

IO2 tier pricing

AWS AMER Summit Aug 2021: Managing Amazon EBS snapshots & AMIs with Amazon Data Lifecycle Manager

Automating Amazon EBS volume resizing with AWS Step Functions and AWS Systems Manager

https://github.com/awslabs/amazon-ebs-autoscale

https://github.com/aws-samples/aws-ebs-snapshots-awsorganizations/blob/main/GetSnapshotDetailsAllAccountsOU.py