AWS bill line item
DedicatedUsage:m5.large
The hourly running cost of an EC2 instance launched with dedicated tenancy, single-tenant physical hardware billed at a premium over the same instance type's shared-tenancy rate, plus a flat per-region hourly fee if any dedicated instance runs in that region.
Dedicated Instance hours
Verified against official AWS documentation last checked
Why it shows up
Appears when an instance, AMI, or an entire VPC's default tenancy is set to "dedicated" (often for compliance or licensing reasons) rather than "default"; one mistaken VPC-level tenancy setting can push every instance launched into it onto this pricier line without anyone noticing.
It's a different billing line from Dedicated Hosts, which reserve whole physical servers; dedicated-tenancy instances share host hardware allocated just to your account.
How to cut it
- Check VPC and instance tenancy settings. Switch to "default" unless dedicated hardware is a genuine compliance requirement.
- If isolation is required, compare cost against a Dedicated Host, which can be cheaper at higher instance density and supports bring-your-own-license.
- Apply commitment discounts compatible with dedicated tenancy to cut the per-instance premium.
How to read this code
:instanceType suffixThe specific instance type or size a charge applies to, e.g. BoxUsage:m5.large. One line per distinct type in use.
Source
Source: AWS docs →Found DedicatedUsage:m5.large on your own bill?
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