How do AWS Cost Explorer, Budgets, and Savings Plans manage cloud expenditure?
❓ Interview Prompt: Explain AWS Cost Explorer analytics, AWS Budgets email alarms, Savings Plans vs Reserved Instances, and cost tagging.
Managing cloud financial spend (FinOps) requires tracking tools and purchasing strategies:
1. AWS Cost Explorer:
Visual tool to analyze historical cloud spend, forecast future costs, and identify unattached EBS volumes or underutilized instances.
2. AWS Budgets:
Allows setting custom cost and usage limits. Sends automated email or SNS alerts when actual or forecasted costs cross defined thresholds (e.g. 80% of budget).
3. Compute Savings Plans:
Offers up to 72% savings over On-Demand rates in exchange for committing to a consistent hourly compute spend ($/hour) for a 1-year or 3-year term across EC2, Fargate, and Lambda!
Code Implementation Example
# AWS Budget triggering email alert when monthly cost exceeds $500
resource "aws_budgets_budget" "monthly_cap" {
name = "monthly-budget-alarm"
budget_type = "COST"
limit_amount = "500"
limit_unit = "USD"
time_unit = "MONTHLY"
notification {
comparison_operator = "GREATER_THAN"
threshold = 80
threshold_type = "PERCENTAGE"
notification_type = "ACTUAL"
subscriber_email_addresses = ["devops@company.com"]
}
}AWS Budgets triggers alerts when spend thresholds break; Savings Plans deliver up to 72% discounts in exchange for compute commitments.