cloudcostdown.euAWS Cost Management · Pillar Guide
AWS Cost Management Best Practices for Startups
A comprehensive guide across all six cost management pillars: visibility, compute, storage, networking, databases, and governance. Each practice links to a detailed implementation guide.
Visibility: Know where your money goes
Enable AWS Cost Explorer and review weekly
Full guide →Set up Cost Anomaly Detection (free, 15 minutes)
Full guide →Implement a tagging strategy for cost allocation
Full guide →Activate cost allocation tags in Billing settings
Full guide →Create AWS Budgets with SNS alerts for each environment
Compute: Right-size and right-price
Right-size EC2 instances using Compute Optimizer
Full guide →Migrate EC2 and Lambda to Graviton (20–40% savings)
Full guide →Use EC2 Spot instances for stateless and batch workloads
Full guide →Purchase Compute Savings Plans for baseline workloads
Full guide →Stop non-production instances outside working hours
Storage: Tier and lifecycle
Add S3 lifecycle policies to all buckets with aged data
Full guide →Delete incomplete multipart uploads (add 7-day abort rule)
Full guide →Migrate EBS volumes from gp2 to gp3 (20% cheaper)
Full guide →Clean up unattached EBS volumes and old snapshots
Full guide →Set CloudWatch log group retention (default is never)
Full guide →Networking: Eliminate transfer waste
Create S3 and DynamoDB Gateway VPC Endpoints (free)
Full guide →Add Interface Endpoints for ECR, CloudWatch, Secrets Manager
Full guide →Use CloudFront in front of S3 and static content
Full guide →Audit cross-AZ data transfer patterns
Full guide →Enable Topology Aware Routing in Kubernetes
Full guide →Databases: Right instance and right price
Right-size RDS instances based on CloudWatch utilization
Full guide →Purchase RDS Reserved Instances for production databases
Full guide →Switch DynamoDB to provisioned mode with auto scaling
Full guide →Migrate ElastiCache to Valkey engine (20–33% cheaper)
Full guide →Stop dev/staging databases when not in use
Full guide →Governance: Prevent future waste
Enforce mandatory tags with AWS Config rules
Full guide →Set resource quotas per environment (Service Quotas)
Implement cost allocation showback for engineering teams
Full guide →Review Savings Plans and RI coverage monthly
Full guide →Set up a FinOps review cadence (monthly 30-min cost review)
Full guide →Frequently Asked Questions
What is AWS cost management?
AWS cost management is the practice of understanding, controlling, and optimizing your AWS spending. It spans visibility (knowing where money goes), rightsizing (matching resources to actual needs), commitment discounts (Savings Plans, RIs), and governance (preventing future waste through tagging, budgets, and process).
Where should a startup start with AWS cost management?
In order: (1) Enable Cost Anomaly Detection to stop future surprises. (2) Set log group retention to stop unbounded CloudWatch growth. (3) Create S3 Gateway VPC Endpoints to eliminate NAT charges on S3 traffic. (4) Review Compute Optimizer recommendations for EC2 rightsizing. These four steps can be done in a day and typically save 15–25% on most startup bills.
How often should I review AWS costs?
Weekly for engineering leads: check Cost Explorer for unexpected changes. Monthly for finance and leadership: review total spend, unit economics, and optimization progress. Quarterly for architecture: identify new waste from system changes and review commitment discount coverage.
What is the typical AWS cost optimization potential for a Series B startup?
Most Series B startups we audit find 30–40% savings potential. The most common large savings: NAT Gateway VPC endpoints ($500–5,000/month), S3 lifecycle policies ($300–3,000/month), compute rightsizing (20–40% of EC2/Fargate spend), and DynamoDB pricing mode ($500–5,000/month). Together these often total €50K–150K/year.