#cloud

Create reusable Terraform module for multi-cloud deployment (AWS/Azure). Features: 1. Networking layer (VPC/VNet). 2. Variables for customization (instance types, regions). 3. State management with remote backend (S3/Blob). 4. Security groups and firewall rules. 5. Load balancer configuration. 6. Output values for connection strings. 7. Terratest scripts for validation. 8. Documentation with input/output tables. Include conditional resource creation logic.

Design a serverless application on AWS. Architecture: 1. API Gateway for HTTP endpoints. 2. Lambda functions for business logic (Node.js/Python). 3. DynamoDB for NoSQL storage. 4. S3 for file uploads with presigned URLs. 5. EventBridge for scheduled tasks. 6. SQS for async processing. 7. CloudWatch for logs and metrics. Use SAM or Serverless Framework for deployment. Implement proper error handling, retries, and dead-letter queues. Include cost optimization strategies (provisioned concurrency, reserved capacity).

Conduct cloud infrastructure cost optimization. Analysis areas: 1. Right-sizing over-provisioned instances. 2. Reserved instances and savings plans. 3. Spot instances for non-critical workloads. 4. Unused resources (idle instances, unattached volumes). 5. Data transfer costs optimization. 6. Storage lifecycle policies. 7. Auto-scaling policies review. Use tools like AWS Cost Explorer, CloudHealth. Provide recommendations with estimated savings. Implement FinOps practices with cost allocation tags and budgets. Target 20-40% cost reduction.

Build serverless with AWS Lambda. Architecture: 1. Function handler receives event. 2. Stateless execution. 3. Cold start optimization. 4. Environment variables for config. 5. IAM roles for permissions. 6. API Gateway for HTTP triggers. 7. EventBridge for scheduling. 8. CloudWatch for logs and monitoring. Use Serverless Framework or SAM. Keep functions small and focused. Mind execution time limits.