Project Name

Migration of 600+ Resources to Terraform Cloud in 3 Weeks

Migration of 600+ Resources to Terraform Cloud in 3 Weeks
Industry
SaaS
Technology
HCP Terraform Cloud, GitHub Actions, Amazon Web Services (AWS), Sentinel Policy as Code, Phased Migration Framework, Terraform Cloud RBAC

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Migration of 600+ Resources to Terraform Cloud in 3 Weeks
Overview

Our client is a fast-growing Series B SaaS company serving customers across North America with a cloud-native platform running on AWS. With over 200 employees including a 25-person engineering organisation, the company had outgrown its early-stage infrastructure practices.

 

Rapid feature development and an expanding microservices footprint drove the need for a more robust, collaborative approach to infrastructure-as-code management – one that could scale with the engineering team without sacrificing control, reliability, or the audit trail the company needed as it prepared for SOC 2 compliance.

 

Self-managed S3 state had worked at 5 engineers. At 25, it had become the single largest source of deployment friction in the organisation.

Key Challenges

Twenty-five engineers, one shared S3 state file, and a deployment process that required coordinating infrastructure changes in Slack before anyone could run a plan.

  • State-Locking Deadlocks Delaying Deployments: With 25+ engineers sharing a single S3-backed Terraform state, concurrent apply operations frequently triggered lock conflicts, delaying deployments and forcing manual coordination.
  • No Visibility Into Infrastructure Drift: Teams lacked a centralized view of plan outputs and apply history, making it difficult to track infrastructure changes and creating compliance challenges ahead of SOC 2 audits.
  • Manual State Management Bottlenecks: Shared S3 state files required senior engineers to manually resolve locks and coordinate access, consuming valuable platform engineering time.
  • Inconsistent Access Controls Across AWS Accounts: Ad-hoc IAM policies and limited environment separation increased the risk of unintended production changes from development workflows.
  • No Policy Guardrails for Infrastructure Changes: Security and cost violations were often detected only after deployment, with no automated policy enforcement during infrastructure provisioning.
  • Slow Plan-to-Apply Review Cycles: Terraform plans were shared through chat and email, creating fragmented approvals, slower deployments, and a higher risk of applying outdated plans.
Our Solution

Ksolves, an AI-first DevOps consulting services company, executed a phased migration of 600+ resources from a self-managed S3 backend to Terraform Cloud, introducing VCS-driven workflows, RBAC controls, and policy-as-code guardrails. Following a zero-downtime approach, every workspace migration was validated through targeted plans and parallel state comparisons before final cutover, ensuring production workloads remained unaffected throughout the three-week engagement.

  • Terraform Cloud Remote State Migration: Migrated all workspace states from the shared S3 backend to Terraform Cloud's managed remote state, eliminating lock conflicts through isolated workspaces and automated state locking.
  • VCS-Driven Workflow With GitHub Actions: Integrated Terraform Cloud with GitHub repositories to enable automatic plan generation on pull requests and controlled applies on merge, replacing manual plan reviews over Slack.
  • Role-Based Access Control and Workspace Segmentation: Reorganized workspaces by team and environment, enforcing clear separation between development, staging, and production through Terraform Cloud RBAC.
  • Sentinel Policy-as-Code Guardrails: Implemented policy checks for mandatory tagging, approved instance types, and cost controls, preventing non-compliant infrastructure changes before deployment.
  • Phased Cutover With Parallel Validation: Migrated workspaces in stages, validating Terraform Cloud outputs against the legacy backend before each cutover to ensure consistency and maintain rollback options.

Technology Stack

Category Technology
Infrastructure HCP Terraform Cloud
Integration GitHub Actions
Platform Amazon Web Services (AWS)
DevSecOps Sentinel Policy as Code
Methodology Phased Migration Framework
Security Terraform Cloud RBAC
Impact

From daily state-lock conflicts and manual deployment coordination to isolated workspace states, VCS-driven workflows, and automated policy enforcement across 600+ resources in just three weeks with zero downtime.

  • Zero-Downtime Migration of 600+ Resources in 3 Weeks: Successfully migrated 600+ resources to Terraform Cloud with no production-impacting incidents, using phased cutovers and validated rollback paths.
  • State-Locking Conflicts Eliminated for 25+ Engineers: Automated state locking removed deployment bottlenecks, enabling parallel Terraform operations without manual coordination.
  • 50% Reduction in Failed Apply Operations: Failed apply rates dropped from roughly 30% to below 15% within the first month by eliminating stale state and lock-related issues.
  • Complete Visibility Into Infrastructure Changes: Terraform Cloud now provides a centralized audit trail for every plan, apply, and state change, supporting SOC 2 compliance efforts.
  • Pre-Apply Policy Enforcement Enabled: Sentinel policies now block security and cost violations before deployment, replacing reactive post-deployment audit processes.
Solution Architecture
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Conclusion

As the engineering team grew, a shared Terraform state became a bottleneck to infrastructure delivery. Ksolves resolved this challenge by migrating 600+ resources to Terraform Cloud in just three weeks with zero production downtime. The new platform eliminated state-lock conflicts, introduced VCS-driven workflows and policy guardrails, and provided complete visibility into infrastructure changes with automated audit trails. With a scalable Terraform Cloud foundation now in place, the company is well-positioned to support future growth while maintaining stronger governance, security, and deployment velocity.

Struggling with Terraform State Management at Scale?

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