cloudcostdown.euAWS Cost Optimization
Knowledge Base
Everything CloudCostDown publishes on AWS costs, FinOps strategy, and startup cloud economics - organized as a structured guide library you can read end-to-end or jump into any chapter.
Chapter 1
AWS Cost Optimization for Startups
The fundamentals every Series A–C CTO needs
Most startup cloud waste isn't technical - it's organizational. No one owns it, no one measures it, and no one has time to fix it. These guides cover the patterns that cost startups the most and how to address them without derailing engineering.
AWS Cost Optimization for Startups
Series A–C startups waste 30–40% of their AWS spend. How to eliminate waste without hiring a full-time engineer.
FinOps for Startups: A Practical Guide
The 80/20 FinOps version for startups: tagging, visibility, and optimization practices that actually move the needle.
How AWS Waste Burns Startup Runway
30–40% of startup cloud spend is waste. On a €20K/month bill that's €6–8K burned monthly. See the real runway math.
7 Hidden AWS Costs That Blindside Startups
NAT Gateway data processing, cross-AZ transfer, orphaned EBS snapshots - the charges that don't show up until the bill is already too high.
10 AWS Cost Mistakes Startups Make
The most common and expensive AWS cost mistakes: over-provisioned EC2, no Savings Plans, zero cost visibility, and silent NAT Gateway bills.
AWS Cost Optimization Before Fundraising
How VCs examine cloud spend in due diligence, what clean unit economics look like, and why optimizing AWS before the raise improves valuation.
AWS Activate Credits Guide
How to qualify for the AWS Activate Portfolio package (up to $100K), apply step by step, and make credits last longer by optimizing first.
AWS Cost Optimization for SaaS
Multi-tenant cost patterns, building cost-per-customer visibility, aligning cloud spend with usage-based billing, and unit economics benchmarks.
Why Engineers Shouldn't Optimize Your AWS Bill
A senior engineer at €100/hour spending 10 hours/month on AWS costs €1,000/month in implicit cost - often more than the savings achieved.
Why Is My AWS Bill So High?
The 7 most common causes of unexpected AWS bill spikes in startup accounts - and how to fix each one fast.
AWS Cost Optimization Checklist
Prioritized checklist for startups - ranked by savings potential and effort. Covers compute, storage, networking, databases, and serverless.
AWS Cost Management Best Practices
Comprehensive guide to AWS cost management: tagging, budgets, rightsizing, commitment discounts, and governance.
Chapter 2
FinOps Strategy
Frameworks, governance, and long-term cost control
One-time optimization doesn't last. Without a strategy, costs drift back within 3–6 months as teams ship new features and traffic grows. These articles cover the FinOps frameworks, tagging governance, and IaC patterns that make savings stick.
FinOps Consultant vs. In-House Hire
A full-time FinOps engineer costs €80–120K+/yr. A consultant delivers the same results for a fraction. Compare real costs, timelines, and trade-offs.
FinOps Maturity Model: Crawl, Walk, Run
The FinOps maturity model (Inform, Optimize, Operate) and where most startups are stuck - usually in early Inform phase.
AWS Cost Drift
One-time optimization doesn't last. Costs drift back within months as teams add services, traffic changes, and instance types age.
Why AWS Cost Tools Don't Actually Reduce Your Bill
Cost Explorer, Trusted Advisor, Compute Optimizer, and FinOps platforms all identify problems. None implement the fix.
AWS Tagging Strategy for Cost Allocation
Poor tagging means you can't see where your money goes. Guide to cost allocation tags, naming conventions, enforcement, and activation.
AWS Cost Allocation: Showback and Chargeback
How to allocate AWS costs to teams, products, and environments - showback vs. chargeback, cost categories, and tagging strategies.
AWS Multi-Account Cost Management
Managing AWS costs across multiple accounts: consolidated billing, SCPs, cross-account visibility, and cost allocation in AWS Organizations.
Terraform AWS Cost Optimization
Bake cost optimization into your Terraform codebase - environment conditionals, Spot configs, dev teardown automation, and tag enforcement.
Chapter 3
Commitment Discounts
Savings Plans, Reserved Instances, Spot, Graviton, and EDP
Commitment discounts are the highest-leverage cost reduction available - 20–90% off list price with no architectural changes required. The risk is locking in the wrong plan. These guides show how to buy correctly.
AWS Savings Plans vs. Reserved Instances
Savings Plans or Reserved Instances? Which commitment type saves the most for Series A–C startups, and how to avoid locking in the wrong plan.
AWS EC2 Spot Instances Guide
EC2 Spot instances offer up to 90% savings. Spot Fleets, mixed instance strategies, interruption handling, and Karpenter for Kubernetes.
AWS Graviton Migration Savings
AWS Graviton delivers 20–40% better price-performance than x86. Most workloads migrate with a single instance type change.
AWS Enterprise Discount Program (EDP)
The AWS EDP gives 10–25% discounts for multi-year spend commitments. When it makes sense, how to negotiate, and what to watch out for.
Chapter 4
AWS Service Deep Dives
Per-service optimization guides: EC2, RDS, NAT Gateway, Fargate, and more
Most AWS waste comes from a handful of services: EC2, RDS, NAT Gateway, EBS, and S3 account for 60–80% of most startup bills. Each guide covers the specific waste patterns for that service and the concrete fixes.
EC2 Rightsizing
Over-provisioned EC2 instances are the #1 AWS cost driver. Rightsizing strategies and IaC implementation (Terraform or CDK) on retainer.
EBS Cost Optimization
Unattached volumes, over-provisioned IOPS, and wrong volume types waste up to 50% of EBS spend.
How to Reduce AWS RDS Costs
RDS is the 2nd biggest line item on most AWS bills. Rightsize instances, switch to Aurora Serverless v2, and buy RIs the smart way.
How to Reduce AWS NAT Gateway Costs
NAT Gateway data processing fees silently drain startup budgets. VPC endpoint strategies and cross-AZ fixes cut costs 70–80%.
AWS Data Transfer Costs Explained
Data transfer is the most confusing AWS bill line item. Cross-AZ, cross-region, and internet egress charges and how to slash them.
How to Reduce AWS Fargate Costs
Fargate bills on requested CPU and memory, not actual usage. Fargate Spot, right-sizing, Graviton, and Savings Plans cut costs 40–70%.
EKS Cost Optimization
EKS clusters accumulate waste fast: over-provisioned nodes, idle namespaces, and missing Spot. Guide to Karpenter, Spot, and pod rightsizing.
How to Reduce AWS Lambda Costs
Lambda costs spiral when memory is over-allocated, timeouts are too long, and Savings Plans are missing. Proven fixes with real pricing examples.
AWS S3 Cost Optimization
Lifecycle policies, Intelligent-Tiering, and storage class selection can cut S3 costs 40–95% with no performance impact.
How to Reduce AWS CloudWatch Costs
CloudWatch log ingestion at $0.50/GB compounds silently. Log retention, metric filters, and disabling unused dashboards cut costs 60–80%.
How to Reduce AWS DynamoDB Costs
On-demand vs. provisioned, reserved capacity, and the Nov 2024 50% price cut most teams missed. Practical guide with cost comparison tables.
How to Reduce AWS ElastiCache Costs
Valkey migration saves 20–33% over Redis OSS on ElastiCache. Graviton instances, Reserved Nodes, and right-sizing add more.
How to Reduce AWS CloudFront Costs
CloudFront has a 1TB/month free tier and powerful caching - most teams underuse it. Guide to origin shielding, cache optimization, and CDN cost reduction.
AWS Support Plan Costs
AWS support plans range from $0 (Basic) to 10% of monthly bill (Enterprise). Most startups overpay. Guide to choosing the right tier.
Serverless Cost Optimization
Reducing costs across the full AWS serverless stack: Lambda, Fargate, API Gateway, and Step Functions with real pricing examples.
AWS AI/ML Cost Optimization
AI/ML is the fastest-growing AWS cost. SageMaker Spot training, Bedrock pricing tiers, and multi-model endpoints cut AI costs 40–70%.
AWS Zombie Resources
Test EC2 instances, unattached EBS volumes, unused load balancers - resources nobody owns but AWS keeps billing for. How to find and kill them.
AWS Auto Scaling Cost Optimization
Most startups run EC2 at 10–20% CPU because scaling targets are too conservative. Target tracking, mixed instances, and Karpenter fix this.
Chapter 5
Cost Visibility & Tooling
Cost Explorer, Anomaly Detection, Compute Optimizer, and FinOps platforms
You can't optimize what you can't see. These guides cover the AWS-native tools and third-party platforms that give you visibility into where your money goes - and their limitations.
How to Use AWS Cost Explorer
AWS Cost Explorer is free and surprisingly powerful. Find cost drivers, identify waste, and build useful reports - step by step.
AWS Billing Dashboard Explained
A plain-English guide to the AWS Billing console - what each section means, why charges appear, and how to find what's driving your bill.
AWS Cost Anomaly Detection
Set up AWS Cost Anomaly Detection in 15 minutes to catch unexpected spend spikes before they become big bills.
AWS Compute Optimizer Guide
AWS Compute Optimizer analyzes EC2, Lambda, ECS, and EBS utilization and recommends rightsized alternatives - step-by-step guide.
Chapter 6
FinOps Tools Comparison
CloudZero, Vantage, Kubecost, CloudHealth, and more
FinOps tools give you dashboards. They don't give you implementation. Here's how the major platforms compare, when they're worth the subscription, and what they can't replace.
Chapter 7
CloudCostDown Services
The AWS Cost Audit and Managed FinOps Retainer
The guides above explain the problem. These pages explain how CloudCostDown solves it - a fixed-price audit that delivers a prioritized savings roadmap in one week, and an ongoing retainer that implements and maintains the results.
AWS Cost Audit for Startups
Fixed-price AWS cost audit (€5K) for Series A–C startups. Prioritized findings report, 30-min walkthrough, 3× ROI guaranteed or free.
Managed FinOps Retainer
Continuous AWS cost optimization, monthly savings reports, and IaC implementation for €3K/month - without hiring a full-time FinOps engineer.
Chapter 8
Results & Background
Case studies, credentials, and verified client outcomes
Before hiring anyone, you want proof. This section covers real results from past engagements and the background that makes them credible.
About Adam Pavlát
Adam Pavlát is an AWS cost optimization consultant with 8+ years of AWS experience, ex-Disney+ Hotstar. Helps Series A–C startups cut AWS spend by 30–40%.
AWS Cost Optimization Case Studies
Real results: €127K/year saved for a Series B fintech, €8,400/month for healthtech, 35% bill reduction for a marketplace.