You are hired as a Cloud & DevOps Engineer for a growing e‑commerce startup, HappyKart. The company is migrating from a monolithic on‑premise system to a cloud‑native microservices architecture.

Your job is to design, secure, and monitor the networking backbone that connects containers, Kubernetes clusters, and cloud services ensuring scalability, security, and resilience.

Project Objectives

1. Design a Secure Network Architecture
   • Create a VPC with public and private subnets.
   • Configure security groups, firewalls, and IAM roles.
   • Implement Zero Trust policies (mutual TLS, role‑based access).
   • Analogy: Like building a fortified postal system with restricted zones and inspectors.
2. Deploy a Microservices Application in Kubernetes
   • Deploy services (e.g., catalog, payments, orders) in pods.
   • Use Services & Ingress for routing.
   • Configure DNS for service discovery.
   • Analogy: Like postal counters ensuring parcels reach the right department.
3. Implement Monitoring & Performance Testing
   • Set up Prometheus + Grafana dashboards.
   • Run iPerf3 tests to measure throughput.
   • Capture packets with tcpdump/Wireshark for debugging.
   • Analogy: Like postal supervisors tracking delivery times and detecting delays.
4. Troubleshooting & Debugging Labs
   • Simulate packet loss, latency, and DNS failures.
   • Use ping, traceroute, nslookup, and netstat to diagnose.
   • Document findings and fixes.
   • Analogy: Like postal detectives retracing courier routes to find missing parcels.
5. Final Showcase
   • Present an architecture diagram (VPC, Kubernetes, monitoring stack).
   • Share configuration files (Terraform, YAML, firewall rules).
   • Demonstrate Grafana dashboards with live metrics.
   • Deliver a portfolio‑ready report explaining design choices, troubleshooting steps, and security policies.

Hands‑On Deliverables

• Terraform scripts → VPC, subnets, IAM.
• Kubernetes manifests → Pods, Services, Ingress.
• Monitoring setup → Prometheus + Grafana dashboards.
• Troubleshooting logs → Ping, traceroute, tcpdump outputs.
• Final report → Architecture + lessons learned.

Real‑World Relevance

• Enterprise IT: Mirrors how companies migrate to cloud securely.
• DevOps: Reinforces CI/CD, automation, and monitoring practices.
• Cloud Security: Demonstrates Zero Trust in action.
• Portfolio: Learners graduate with a job‑ready showcase project.

Quick Recap

This capstone project is a postal‑style blueprint for cloud networking:

• Secure architecture = fortified postal system.
• Kubernetes deployment = postal fleet manager.
• Monitoring = supervisors’ dashboard.
• Troubleshooting = detective labs.
• Final showcase = presenting the national postal blueprint.