Legacy Software Maintenance

Common Challenges & Technical Drivers

• Monolithic architecture bottlenecks preventing independent team feature releases.
• Synchronous API chains causing cascading latency and failure amplification under load.
• Lack of standardized error handling, correlation IDs, and structured logging.
• Difficulty scaling stateful applications across multiple availability zones.

What Is Included (In-Scope Deliverables)

• Cloud-native backend service and API development adhering to 12-factor principles.
• Event-driven messaging integration using queues and publish/subscribe brokers.
• Distributed tracing instrumentation with OpenTelemetry and correlation IDs.
• Automated unit, integration, and contract test suites with mock interfaces.

Scope Boundaries & Transparent Exclusions

• Front-end visual UI/UX graphic design creation (we engineer backends and APIs).
• Third-party API consumption charges (e.g. OpenAI, Stripe, Twilio fees).
• Content marketing writing or end-user customer support.
• Maintaining legacy on-premise proprietary mainframe applications.

Tangible Engineering Deliverables

• Clean, version-controlled TypeScript / Go / Python service repositories with Dockerfiles.
• OpenAPI 3.1 specification contracts and interactive Swagger UI documentation.
• Automated test suites with high code coverage verifying business logic and edge cases.
• Deployment manifests and environment configuration variable templates.

Select your target cloud environment and operational scale to view projected engineering capacity and sprint milestones.

Enterprise baseline declaration module deployed as part of this service scope. Fully auditable, zero-lockin, turnkey source code.

resource "aws_sqs_queue" "workload_dlq" {
  name = "app-workload-dlq"
}

resource "aws_sqs_queue" "workload_queue" {
  name                      = "app-workload-queue"
  redrive_policy = jsonencode({
    deadLetterTargetArn = aws_sqs_queue.workload_dlq.arn
    maxReceiveCount     = 3
  })
}

resource "aws_lambda_event_source_mapping" "queue_trigger" {
  event_source_arn = aws_sqs_queue.workload_queue.arn
  function_name    = aws_lambda_function.consumer.arn
  batch_size       = 10
}

Sprint Delivery Roadmap & Phased Milestones

Frequently Asked Questions