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August 2025

What's New​

StackBuilder: Infra Generation and Deployment Agent For Developers And Platform Engineers​

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StackBuilder, your AI-powered assistant for simplifying Day 0 infrastructure tasks using natural language. Whether you're a platform engineer writing Terraform or a developer generating self-service environments, StackBuilder’s agentic workflows help you move faster.

assist me

Key Features

  • Day 0 (Available Now): Generate and configure Infrastructure-as-Code (IaC), set up storage, networking, variables, and more.
  • Day 1 & 2 (Coming Soon): Monitoring, drift detection, incident response, and auto-remediation.

How It Works

Powered by StackGen AI agents, StackBuilder blends deterministic guardrails with generative AI to automate infrastructure tasks, so you can spend more time shipping features.

  • Platform Engineers: Use the TF Module Coding Agent to generate and manage Terraform modules.
  • Developers: Use the Self-Service Agent to generate governed infrastructure from natural language prompts, producing an appStack.

Getting Started

  1. Navigate to StackGen > Click Assist Me > Launch StackBuilder.

    assist me

  2. Use prompts like:

    Generate Terraform code to deploy a typical web application backend on AWS. Include:

    • A VPC with public and private subnets
    • An EC2 instance (or ECS Fargate task) behind a load balancer
    • RDS for PostgreSQL and ElastiCache for Redis, both in private subnets
    • NAT Gateway and Internet Gateway
    • IAM roles with least privilege
    • Security groups for web, DB, and cache layers
    • S3 bucket for static assets and logs
    • Outputs for public IP, DB endpoint, and other key values

    Follow AWS best practices for networking and security.

    note

    If using Custom Modules, ensure they are pre-created and published in the Catalog for correct reference.

    Prompt1

  3. Configure, validate, and export your IaC—errors and policy violations are auto-detected and fixable.

    Prompt2

Error Handling And Governance

  • Errors, policy violations, and configuration issues are detected and clearly explained.
  • Manual fixes may be required—work with your DevOps team if needed.
  • Governance settings are enforced: if your request violates them, the agent will either block or auto-adjust the output accordingly.

Check out StackBuilder to learn more.

Share Your Infrastructure With Set of appStacks Across Projects​

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You can now share outputs from one appStack so other appStacks or projects can reuse them, ideal for separating networking, applications, or other components while keeping everything connected.

Key Features

  • Cross-Project Sharing: Publish outputs (e.g., VPC IDs, Subnet IDs, Security Group IDs) from a provisioned appStack to another project.
  • Automatic Updates: If the original appStack is updated, dependent appStacks automatically get the new values.
  • Support for Multiple Sources: Share infrastructure from provisioned appStacks, imported tfstate files, or cloud asset discoveries with a remote backend enabled.
  • Easy Integration: Use shared values directly in new appStacks without redeploying the original appStack.

This feature lets your teams work independently while reusing core infrastructure, avoiding duplication and ensuring consistency across environments.

Check out Share Infra documentation to learn how you can share your infrastructure across Projects.

What's Enhanced​

StackGen CLI​

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  • StackGen CLI Version v0.67.0.: New --appstack-id Flag for the download-iac Command. We’ve added a new CLI flag to the download-iac Command make it easier to retrieve your generated Infrastructure as Code (IaC) files.

    • The --appstack-id flag lets you specify the UUID of the appStack you want to download.
    • You can use stackgen appstack show to find UUIDs.

    Learn more about download-iac

  • StackGen CLI Version v0.64.3.: Default Policies are now auto-applied to appStacks that are created using StackGen CLI.

    • This update fixes a known issue where appStacks created using StackGen CLI now match the UI experience by including default security policies.
    • Cloud-Aware Defaults: Policies are applied automatically for AWS, GCP, and Azure appStacks.
    • Flexible Control: Use --skip-policies flag if you prefer not to attach default policies.

Stay Ahead of Infrastructure Changes With Drift Alerts​

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Drift Alerts now keep you informed whenever your infrastructure changes outside of your Infrastructure-as-Code (IaC) definitions, thus letting you respond quickly, maintain compliance, and avoid downtime.

Key Features

  • Automatic Drift Detection: Continuously alerts for any changes to your deployed resources against your IaC so that you can spot unauthorized or manual changes.
  • Real-Time Slack Notifications: Get instant alerts in your connected Slack channel whenever a drift is detected.
  • Centralized Reporting: All drift types are tracked and reported and no manual setup is required.

With Drift Alerts, you’ll know the moment your infrastructure drifts from its intended state, so you can take corrective action before it impacts your environment.

Learn more about Drift Alerts

Streamlined UI Menu for Sharing, Importing, and Exporting IaC​

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We’ve redesigned the action buttons to make your most used workflows faster and keep the interface tidy.

export/import buttons

  1. Prominent Push to Git button: is now the primary button for quick access.
  2. Download IaC icon: is placed right next to Push to Git button.
  3. An ellipsis ⋮ icon: for more actions, such as:

This update ensures sharing, importing, and exporting IaC is quicker, while keeping the workspace uncluttered.

What's Fixed​

Cloud Discovery UI: Search and Filter Does Not Work On Create appStack Page​

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Previously, the Search and Filter functionality on the Cloud Discovery page, only returned filtered values that were visible on the current page and missed showing results from other pages.

Search and Filter

This issue has been resolved by implementing backend-driven search, filter, and pagination, ensuring that filtered results are displayed across all pages.

Resource Tags Tab Is Disabled for a Subnet Resource Until You Add Tags​

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The Resource Tags UI logic now checks for the presence of a tags attribute in the resource template. From this release onward, the Resource Tags tab will appear for any resource that defines a tags variable in its template, regardless of whether tag values are set. This removes the need to update templates solely to make the tab visible.

Previously, for resources such as Subnet, the tab remained disabled until the Add button was clicked and at least one tag was added, thereby blocking access to the tab.

resource tag error

Policies Are Not Getting Added to appStacks Created via CLI​

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In CLI Version v0.64.3, default policies are now automatically attached when you create an appStack via CLI using the command stackgen appstack create, unless --skip-policies is specified. We recommend that you upgrade to this version to ensure consistent behavior.

Previously, appStacks created using StackGen CLI were missing the assignment of default policies for AWS, GCP, and Azure, unlike those created via the Web UI.

Supported Resources​

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With this release, we've added Kubernetes to the list of supported platforms across cloud providers. We've also added the following resource and services across the following clouds:

Cloud ProviderServicesResources
AWS412
Azure39
GCP27

Refer to the Supported Resources document to view the complete list.

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