For CloudWatch metric description please look here: https://docs.aws.amazon.com/lambda/latest/dg/monitoring-metrics.html

Labels:

Metric CloudWatch Metric CloudWatch Statistic
aws_lambda_invocations Invocations sum
aws_lambda_errors Errors sum
aws_lambda_duration Duration average
aws_lambda_duration_max Duration maximum
aws_lambda_duration_min Duration minimum
aws_lambda_duration_sum Duration sum
aws_lambda_duration_p50 Duration p50
aws_lambda_duration_p80 Duration p80
aws_lambda_duration_p95 Duration p95
aws_lambda_duration_p99 Duration p99
aws_lambda_duration_p99_9 Duration p99.9
aws_lambda_dead_letter_errors DeadLetterErrors sum
aws_lambda_destination_delivery_failures DestinationDeliveryFailures sum
aws_lambda_throttles Throttles sum
aws_lambda_provisioned_concurrency_invocations ProvisionedConcurrencyInvocations sum
aws_lambda_provisioned_concurrency_spillover_invocations ProvisionedConcurrencySpilloverInvocations sum
aws_lambda_post_runtime_extensions_duration PostRuntimeExtensionsDuration average
aws_lambda_post_runtime_extensions_duration_max PostRuntimeExtensionsDuration maximum
aws_lambda_post_runtime_extensions_duration_min PostRuntimeExtensionsDuration minimum
aws_lambda_post_runtime_extensions_duration_sum PostRuntimeExtensionsDuration sum
aws_lambda_post_runtime_extensions_duration_p50 PostRuntimeExtensionsDuration p50
aws_lambda_post_runtime_extensions_duration_p99 PostRuntimeExtensionsDuration p99
aws_lambda_iterator_age IteratorAge average
aws_lambda_iterator_age_min IteratorAge minimum
aws_lambda_iterator_age_max IteratorAge maximum
aws_lambda_iterator_age_sum IteratorAge sum
aws_lambda_concurrent_executions ConcurrentExecutions average
aws_lambda_concurrent_executions_min ConcurrentExecutions minimum
aws_lambda_concurrent_executions_max ConcurrentExecutions maximum
aws_lambda_concurrent_executions_sum ConcurrentExecutions sum
aws_lambda_provisioned_concurrent_executions ProvisionedConcurrentExecutions average
aws_lambda_provisioned_concurrent_executions_min ProvisionedConcurrentExecutions minimum
aws_lambda_provisioned_concurrent_executions_max ProvisionedConcurrentExecutions maximum
aws_lambda_provisioned_concurrency_utilization ProvisionedConcurrencyUtilization average
aws_lambda_provisioned_concurrency_utilization_min ProvisionedConcurrencyUtilization minimum
aws_lambda_provisioned_concurrency_utilization_max ProvisionedConcurrencyUtilization maximum
aws_lambda_unreserved_concurrent_executions UnreservedConcurrentExecutions maximum