Send metrics to AWS Cloudwatch as custom Metrics. aws cloudwatch put-metric-data --metric-name registered_users --namespace MySaaS --va

Send metrics to AWS Cloudwatch as custom Metrics. aws cloudwatch put-metric-data --metric-name registered_users --namespace MySaaS --value 241 Visualize/Filter/Add Alerts using all the builtin tools from Amazon Cloudwatch, you will need no servers and no configurations. Just run in a cron job a set of queries every 5minutes