Amazon API Gateway now supports API usage plans. You can now easily define plans for third-party developers by associating them with individual API keys. This allows you to configure which APIs the caller can access as well as define throttling and request quota limits. You can also extract utilization data on a per API key basis to analyze API usage and generate billing documents. Usage plans allows you to easily manage and monetize your APIs for your API-based business. Read our documentation to learn more.