<ul data-eligibleForWebStory="true"><li>Automating EC2 instance start/stop with AWS Lambda, CloudWatch, and SNS to prevent unnecessary billing due to idle instances.</li><li>AWS Lambda allows serverless code execution, triggered by events/alerts, without server management.</li><li>Amazon EC2 provides resizable cloud computing capacity for running applications and websites.</li><li>Amazon SNS is a managed messaging service for sending notifications via email, SMS, or push notifications.</li><li>Prerequisites include an AWS Account and Gmail Account for notifications.</li><li>Step 1 involves creating an IAM role and policy for EC2 and SNS permissions.</li><li>Step 2 entails creating Lambda functions 'Stopec2' and 'Startec2' for stopping and starting instances.</li><li>Step 3 involves creating SNS topics for start and stop instance notifications.</li><li>Step 4 includes creating rules using EventBridge Scheduler for starting and stopping EC2 instances.</li><li>By scheduling actions and utilizing SNS notifications, the project aims to optimize costs and efficiency in cloud operations.</li></ul>

Automate EC2 Start/Stop with AWS Lambda and CloudWatch — Step-by-Step Guide with Alerts

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