Workload tiers are a subscription add-on option available to any app on a Starter plan or above. If you outgrow the workload units (WU) that come bundled into your app plan, you can purchase a workload tier to get additional workload units and unlock lower overage rates to meet your project’s usage needs.

We currently have 5 workload tiers, which offer a range of 200K to 20M additional workload units for your app. See our workload tier comparison chart for more details.