Cost Allocation
Chargeback and showback rule authoring — allocating shared infrastructure cost to the teams that consume it.
At a glance
| Route | /cost-allocation |
| Group | Govern |
| Page permission | spend_allocation |
What it is
Chargeback and showback rule authoring. It allocates shared infrastructure cost to the teams that consume it, so costs that cannot be attributed by tag alone still reach an owner.
Who it is for
Finance business partners and FinOps practitioners implementing chargeback or showback, and engineering managers receiving the allocated cost.
How it works
Some cloud cost is directly attributable — an instance carries a team tag. Much is not: shared clusters, network egress, logging, monitoring, and platform services serve everyone.
Allocation rules distribute that shared cost according to a defined basis, so every dollar reaches a team rather than accumulating in an unallocated bucket that nobody owns.
An advisor analyses your current spend pattern and proposes rules, and a report shows the resulting allocation — so a rule set can be validated before it is used for chargeback.
Features
- Chargeback and showback rule creation, editing, and deletion
- Allocation advisor proposing rules from actual spend patterns
- Allocation report showing the outcome of the current rule set
- Integration with the normalised team, environment, and feature dimensions
- Allocation export for finance systems, through Cost Center → Enterprise Ops
How to use it
Establish direct attribution first
Through Tag Governance and Ownership.
Allocation rules should handle the genuinely shared remainder — not compensate for poor tagging. Using allocation to paper over a tagging problem produces numbers teams will dispute.
Run the advisor
To see proposed rules derived from your actual spend shape.
Author rules for each shared cost category
Choosing a basis teams will accept as fair. This is a social decision as much as a technical one.
Run the allocation report and check per-team outcomes
Before publishing anything.
Socialise the methodology before the first chargeback
Disputed allocation methodology is the usual reason chargeback programmes fail. Agreeing the basis in advance costs a meeting; disputing it afterwards costs the programme.
Export allocations to the finance system
For the monthly close.
Review quarterly
As the estate and team structure change.
Why it matters
Unallocated shared cost is the point at which cost accountability breaks down. A team can optimise only what it can see — and if forty percent of the bill sits in an unowned bucket, no amount of team-level reporting will move it.
Allocation rules close that gap, and are a prerequisite for meaningful unit economics.
Connects to
- Depends on Tag Governance and Ownership
- Feeds allocation coverage in Unit Economics and the team allocation dimension of FinOps Maturity
- Exports through Cost Center → Enterprise Ops
Resource Parking
Scheduled shutdown — AutoStopping, off-hours parking, hibernation, and scale-to-zero in one control plane, with unsafe-schedule detection.
Ownership
The map from cloud resources to owning teams and services, including automated inference sweeps that assign untagged resources by pattern.