CloudBurn

In the sprawling, automated landscape of modern cloud infrastructure, a silent budget killer often goes unnoticed until it's too late. CloudBurn is the unsung guardian for engineering teams, a tool designed to illuminate the financial impact of infrastructure code before it ever touches production. It’s built for teams using Terraform or AWS CDK who are tired of the monthly bill shock, where a seemingly innocuous pull request can quietly commit the company to thousands in unnecessary spend. CloudBurn changes the game by shifting cost visibility left, directly into the developer's workflow. It automatically analyzes infrastructure diffs in pull requests, calculates the exact monthly AWS cost using real-time pricing, and posts a clear, actionable report as a comment. This creates a crucial feedback loop, empowering teams to discuss, debate, and optimize costs during code review—when changes are trivial—instead of weeks later during a painful, reactive fire drill. It transforms cloud financial management from a post-mortem accounting exercise into an integral, proactive part of the development cycle, catching $10K+ mistakes before they ever hit your AWS bill.

Automated Pull Request Cost Analysis

CloudBurn seamlessly integrates into your GitHub workflow to automatically analyze every infrastructure change. When a pull request is opened, it captures the output from your cdk diff or terraform plan, processes the diff, and calculates the precise monthly cost impact. This happens without any manual intervention, embedding cost awareness directly into the code review process where it can be most effectively acted upon.

Real-Time AWS Pricing Intelligence

Gone are the days of outdated spreadsheet models. CloudBurn pulls directly from the latest AWS pricing data to provide accurate, real-time cost estimates for every resource in your infrastructure diff. Whether it's a new EC2 instance type, Fargate task definition, or S3 storage configuration, you see the exact dollar impact based on current on-demand rates, ensuring your estimates are always relevant and reliable.

Actionable PR Comment Reports

The tool posts a detailed, easy-to-understand cost report directly as a comment on your pull request. This report breaks down the cost change per resource, shows the overall monthly delta, and provides granular pricing details. This transparent report sparks informed team discussions during review, turning cost optimization into a collaborative engineering decision rather than a frustrating finance-led mandate.

Secure GitHub-Centric Integration

CloudBurn is built with developer security and convenience in mind. Billing, setup, and repository permissions are handled entirely through GitHub, eliminating the need for separate accounts or sensitive credential management. You install it from the GitHub Marketplace, configure a simple GitHub Action, and it operates securely within your existing CI/CD environment.

Preventing Costly Misconfigurations

The primary use case is catching expensive mistakes before deployment. A developer might inadvertently specify a t3.xlarge instance instead of a t3.micro. CloudBurn flags this in the PR, showing a potential cost overrun of hundreds of dollars per month, allowing the team to correct it instantly and avoid a painful post-deployment refactor and bill shock.

Enabling Proactive FinOps Culture

CloudBurn helps engineering teams build a culture of cost accountability. By making cost data a first-class citizen in the PR review, it empowers developers to understand the financial consequences of their architectural choices. Teams can debate cost-performance trade-offs early, fostering a proactive FinOps mindset where everyone is responsible for cloud efficiency.

Streamlining Infrastructure Code Reviews

Reviewing infrastructure-as-code changes becomes more comprehensive and efficient. Beyond checking for security and correctness, reviewers can now instantly assess financial impact. This elevates the quality of code reviews, ensuring that both technical and budgetary considerations are addressed before merging, leading to more robust and cost-effective deployments.

Validating Architecture Changes

When planning significant architectural shifts, such as migrating to a new database service or scaling up compute resources, teams can use CloudBurn to validate the cost implications of their proposed design. By creating a feature branch and opening a PR, they receive an immediate cost forecast, enabling data-driven decisions about the feasibility and scope of the change.

How does CloudBurn calculate the cost estimates?

CloudBurn analyzes the infrastructure diff from your Terraform plan or AWS CDK synthesis output. It identifies the specific AWS resources being added, modified, or removed, then queries the official AWS Price List API using the resource configurations (instance type, region, storage size, etc.) to calculate the estimated monthly on-demand cost. The report reflects the net change to your bill.

What infrastructure-as-code tools does CloudBurn support?

Currently, CloudBurn provides dedicated support for two of the most popular IaC frameworks: HashiCorp Terraform and AWS Cloud Development Kit (CDK). For each, there is a specific GitHub Action (Terraform Plan PR Commenter or AWS CDK Diff PR Commenter) that formats and sends the plan/diff output to CloudBurn for analysis.

Is my code or cloud configuration data secure?

Yes. CloudBurn is designed with a security-first, GitHub-native approach. The tool operates through officially installed GitHub Apps and Actions. Your actual Terraform or CDK code, along with sensitive output, is processed securely within your GitHub Actions workflow environment. CloudBurn does not require access to your AWS credentials or production environment.

Can I try CloudBurn before committing to a paid plan?

Absolutely. You can start with a free Community plan to experience the core functionality. Additionally, CloudBurn offers a 14-day Pro trial that unlocks all advanced features without requiring a credit card. You can cancel anytime or seamlessly continue using the free Community plan if the Pro tier isn't needed.