March 2026 monthly summary for hashicorp/terraform-provider-aws. The month focused on stabilizing environment variable handling for the AWS ECS Express Gateway Service. No new features were delivered; the primary work was a critical bug fix to preserve and restore the order of environment variables and secrets so that the runtime state after apply matches the plan, eliminating ordering drift. This correction enhances deployment determinism and reduces operator-friction in production and CI/CD pipelines.

December 2025: Delivered Spot Instances Support in the AWS ECS Capacity Provider for opentofu/terraform-provider-aws, enabling cost-efficient mixed Spot and On-Demand workloads. This feature was implemented with a focused commit (c22ba0e4c7f65e2a29a8f13234de45ae4a2fa23c) and accompanied by updates to FMI Spot changelog, documentation, and linting. No major defects reported; minor documentation and lint improvements completed to improve release quality and developer experience. Overall impact: enhanced cost efficiency, greater flexibility in capacity planning, and stronger alignment with cost-optimization business goals. Technologies and skills demonstrated: AWS ECS, Spot Instances, Terraform provider development, changelog/docs maintenance, linting, and cross-repo release readiness.

September 2025 monthly summary for vfsfitvnm/terraform-provider-aws: Delivered two impactful changes focused on test suite maintainability and ECS lifecycle hook configurability. Bug fix: removed two obsolete acceptance tests for ECS Availability Zone Rebalancing upgrades (TestAccECSService_AvailabilityZoneRebalancing_UpgradeV6_8_0_). Feature: introduced hook_details attribute on lifecycle_hook to pass custom parameters to lifecycle hook targets (e.g., Lambda), including schema changes, marshaling/unmarshaling logic, and updated tests. Commits: 7f85b684fd845b5f087a4740c1ec722f39cbf083; 86bebea722c1db9791e161d933dbc3a0d109c4b7.

Month: 2025-08 — vfsfitvnm/terraform-provider-aws: Focused on ECS Blue/Green deployments, acceptance testing, and reliability improvements. Delivered consolidated Blue/Green deployment support with stability improvements, streamlined rollback flow, and schema alignment for ECS service resources. Implemented blue/green read handler changes, improved logging, and refined wait-for-stable abstractions. Reduced unnecessary API calls in rollback by removing an extra DescribeServices call. Extended acceptance test coverage for Blue/Green deployments, specifically graceful termination and SIGINT handling, and aligned test configuration. Mitigated flaky sigintRollback tests by skipping or stabilizing test execution, boosting test suite reliability. Updated docs for sigint cancellation and refreshed Git history for maintainability. Business impact: lower deployment risk, faster safe rollbacks, and stronger validation of Blue/Green workflows.

Delivered reliability and safety enhancements in the Terraform AWS provider (vfsfitvnm/terraform-provider-aws) for 2025-07. Key work includes ECS Blue/Green deployment stabilization with operationTime-based waitServiceStable, customer-initiated graceful termination via SIGINT with rollback support, and a bug fix to improve in-place UpdateService stabilization. These changes reduce downtime during upgrades, enable safer terminations, and improve deployment accuracy. Demonstrated proficiency with AWS ECS, Terraform provider development, and robust rollback mechanics.