Key metrics for monitoring AWS Lambda

AWS Lambda is a compute service that enables developers to build applications without managing infrastructure resources. It is event-driven, meaning it triggers in response to events from other services such as API calls or changes to a DynamoDB table. Monitoring the efficiency of your Lambda functions can help you optimize their performance and manage costs. Key metrics include function utilization and performance, invocations, concurrency, and provisioned concurrency usage. AWS Lambda provides these metrics through CloudWatch, which enables users to monitor and troubleshoot issues in real-time.