F5 Rule

NGINXaaS is metered hourly and billed monthly

Catalog row in Vendor License Rules · Cited

Kind: Consumption
Statement: NGINX documentation: billing is monthly from hourly consumption; Standard V3 has a $0.25/hour per-deployment fee, $0.008/hour/NCU and $0.005/GB. (page undated)
Applies when: Using NGINXaaS
Applies to: NGINXaaS for Azure
Related metrics: NGINX Capacity Unit (NCU)

Evidence 1

"NGINXaaS for Azure is billed monthly based on hourly consumption."