OCI Health Score Calculator

score = resilience × 0.30 + security × 0.30 + cost × 0.20 + operations × 0.20, where each pillar blends its coverage inputs and idle spend is penalised at four points per percent. Each pillar is scored from coverage percentages you can read out of Cloud Guard, the Vault, Resource Manager and Monitoring, then combined with resilience and security carrying the heaviest weight. Idle spend is penalised four points per percent because, unlike a low Ampere adoption figure, it delivers nothing in return.

A single score makes a tenancy comparable month over month and across teams, and the weakest-pillar output converts it into one concrete next action rather than a dashboard nobody opens. Untested backups and unmonitored compartments are the two inputs that most often turn out to be worse than the team assumed.

This calculator takes 9 inputs: Production workloads spread across availability domains, Volumes with a tested restore, Compute running on Ampere, Spend on idle or unattached resources, Compartments monitored by Cloud Guard, Resources encrypted with customer-managed Vault keys, IAM policies reviewed in the last year, Resources managed by Resource Manager stacks, Critical resources with an alarm. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.