[AWS Well-Architected](https://aws.amazon.com/architecture/well-architected) is guidelines for excellent AWS architecture. Learn, measure, and build using architectural best practices. [What Does An SRE (Site Reliability Engineer) Do On Amazon Web Services? – DrewLearns.com](https://drewlearns.com/what-does-an-sre-site-reliability-engineer-do-on-amazon-web-services/). ## Operational excellence > The operational excellence pillar focuses on running and [Monitoring](app://obsidian.md/Monitoring) systems to deliver business value, and continually improving processes and procedures. Key topics include automating changes, responding to events, and defining standards to manage daily operations. You should install and configure the [Unified Amazon CloudWatch Agent](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/UseCloudWatchUnifiedAgent.html) to send system level application logs and advanced metrics from your EC2 instances and physical servers to [[Amazon CloudWatch]]. You can [send logs directly](https://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_PutLogEvents.html) from your application to CloudWatch using the [CloudWatch Logs API](https://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/Welcome.html), or [send events](https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/AddEventsPutEvents.html) using the [AWS SDK](https://docs.aws.amazon.com/eventbridge/latest/APIReference/API_PutEvents.html) and [Amazon EventBridge](https://docs.aws.amazon.com/eventbridge/latest/userguide/what-is-amazon-eventbridge.html). Insert [logging statements](https://docs.aws.amazon.com/lambda/latest/dg/monitoring-cloudwatchlogs.html) into your [AWS Lambda](http://aws.amazon.com/lambda/) code to automatically store them in CloudWatch Logs.