Which solution will meet these requirements with the MOST operational efficiency?
Create a daily budget for the Savings Plans by using AWS Budgets. Configure the budget with a coverage threshold to send notifications to the appropriate email message recipients.
Create a Lambda function that runs a coverage report against the Savings Plans. Use Amazon Simple Email Service (Amazon SES) to email the report to the appropriate email message recipients.
Create an AWS Budgets report for the Savings Plans budget. Set the frequency to daily.
Create a Savings Plans alert subscription. Enable all notification options. Enter an email address to receive notifications.
Explanations:
AWS Budgets allows for setting up a budget for Savings Plans coverage and configuring thresholds to send notifications when the coverage falls below a specified percentage, meeting the requirements efficiently.
Creating a custom Lambda function to generate a Savings Plans coverage report adds operational complexity and maintenance overhead, making it less efficient compared to using AWS Budgets’ native notification features.
An AWS Budgets report provides a summary of the budget but does not directly send notifications for coverage drops, which does not fully meet the notification requirement.
Savings Plans alerts mainly notify about expiration and renewal, not coverage drops, which does not meet the specific requirement for coverage-based notifications.
I estimate that the answer is:
Create a daily budget for the Savings Plans by using AWS Budgets. Configure the budget with a coverage threshold to send notifications to the appropriate email message recipients.