Amazon CloudWatch Launches Usage Metrics and Service Quotas Integration
You can now proactively manage your quotas with Amazon CloudWatch Usage Metrics and Service Quotas Integration. Usage Metrics provide visibility into resource and API utilization for your AWS services. A new Metric Math function allows you to retrieve your most up-to-date quotas from Service Quotas. With these capabilities you have greater visibility into your service usage, and you can start to proactively manage your quotas.
Source:: Amazon AWS