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.

from Recent Announcements: https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-cloudwatch-adds-service-usage-metrics-integration-service-quotas/