# Billing & Licensing

- [License overview](/4.0/licensing/overview.md): This page describes how licensing works in a Weka cluster.
- [Classic license](/4.0/licensing/classic-licensing.md): This page describes how to obtain a classic Weka license (payment for a predetermined period of time) and apply it to the Weka cluster.
- [Pay-As-You-Go license](/4.0/licensing/pay-as-you-go.md): This page describes Pay-As-You-Go (PAYG) licenses which allow cluster payment on an hourly basis, as part of your AWS bill.