Lesson 05 — Enterprise DevSecOps & Infrastructure as Code (IaC) Security Project & Module Review

Learning Path

☁️ Phase 02 – AWS Cloud Security

📘 Module 11 – DevSecOps & Infrastructure as Code (IaC) Security

🎯 Lesson Objective

By the end of this capstone project, you will be able to:

Design an enterprise DevSecOps architecture.
Build secure Infrastructure as Code.
Design secure CI/CD pipelines.
Integrate automated security testing.
Secure application secrets.
Protect software supply chains.
Design deployment approval workflows.
Build secure production deployments.
Monitor the DevSecOps platform.
Present an executive security review.

📚 Lesson Information

Estimated Time: 8–10 Hours

Difficulty: Advanced

Prerequisites: Lessons 01–04

Capstone Project: Yes

💼 Enterprise Business Scenario

CloudNova Technologies has rapidly expanded into a global cloud provider delivering financial, healthcare and retail applications.

Current environment:

120 AWS Accounts
8 AWS Regions
450 Developers
70 DevOps Engineers
40 Cloud Security Engineers
300 GitHub Repositories
150 Microservices
Amazon EKS Clusters
Amazon ECS Services
AWS Lambda Applications
Terraform Infrastructure
CloudFormation Templates
Multiple CI/CD Pipelines

The organization performs hundreds of deployments every week.

A recent third-party security assessment discovered:

AWS Access Keys committed to Git repositories.
Public S3 buckets deployed through Terraform.
Container images containing Critical CVEs.
Production deployments bypassing approvals.
Shared IAM roles across all environments.
Missing secret rotation.
Manual infrastructure changes causing drift.
No policy enforcement for Infrastructure as Code.
Developers deploying directly to production.
Security testing performed only before quarterly releases.

The Board of Directors has instructed the CISO to implement an enterprise DevSecOps platform that delivers:

Secure software delivery
Automated security testing
Infrastructure as Code governance
Secure secrets management
Production approval workflows
Continuous compliance
Continuous monitoring
Enterprise audit capability

As the Lead Cloud Security Engineer, you have been assigned to design the complete solution.

🏢 Enterprise Environment

CloudNova operates the following AWS environments:

                    Developers

                        │

                GitHub Enterprise

                        │

                Secure Pull Requests

                        │

                AWS CodePipeline

                        │

                 AWS CodeBuild

                        │

        Automated Security Validation

                        │

        ┌───────────────┼────────────────┐
        │               │                │
     SAST Scan      Secret Scan      IaC Scan
        │               │                │
        └───────────────┼────────────────┘
                        │
               Dependency Scan
                        │
               Container Scan
                        │
             Artifact Repository
                        │
              Staging Environment
                        │
             Manual Approval Gate
                        │
             Production Deployment
                        │
 CloudTrail • CloudWatch • Security Hub
                        │
              Continuous Monitoring

📋 Phase 1 — Assess Current Environment

Perform a complete assessment.

Review:

Git repositories
CI/CD pipelines
IAM roles
Terraform templates
CloudFormation templates
Docker images
Secrets
AWS Accounts
Deployment process

Document:

Existing risks
Existing controls
Missing controls
Business impact

📋 Phase 2 — Design Secure DevSecOps Architecture

Design:

Source Control
Branch Protection
Secure Build Pipeline
Secure Deployment Pipeline
Multi-Account Strategy
Secrets Management
Monitoring
Security Operations

Deliverables:

Architecture Diagram
Security Controls
Data Flow
Trust Boundaries

📋 Phase 3 — Secure Infrastructure as Code

Review all Infrastructure as Code.

Tasks:

Validate CloudFormation
Validate Terraform
Remove hardcoded values
Enable encryption
Enable logging
Apply least privilege
Configure tagging
Enable drift detection
Configure policy validation

Document:

Issues identified
Remediation
Final architecture

📋 Phase 4 — Secure CI/CD Pipeline

Build a secure deployment pipeline.

Pipeline must include:

Pull Request
Peer Review
Build
Unit Tests
SAST
Secret Scan
Dependency Scan
IaC Scan
Container Scan
Manual Approval
Production Deployment

Workflow:

Developer

↓

GitHub

↓

Pull Request

↓

Code Review

↓

Security Validation

↓

AWS CodeBuild

↓

Artifact

↓

Approval

↓

Production

📋 Phase 5 — Implement Security Testing

Automate:

Static Analysis
Dependency Scanning
Secret Scanning
IaC Scanning
Container Image Scanning

Define:

Severity Levels
Blocking Criteria
Exception Process
Approval Workflow

📋 Phase 6 — Secure Secrets

Replace:

❌ Hardcoded Passwords

❌ API Keys

❌ Database Credentials

With:

✅ AWS Secrets Manager

✅ Parameter Store

Configure:

IAM Policies
KMS Encryption
Secret Rotation
Logging
Monitoring

📋 Phase 7 — Secure Container Platform

Review:

Docker Images
Base Images
Image Tags
Root Users
Image Vulnerabilities

Implement:

Amazon ECR
Image Scanning
Immutable Tags
Image Signing
Deployment Policies

📋 Phase 8 — Monitoring & Incident Response

Implement monitoring using:

CloudTrail
CloudWatch
EventBridge
Security Hub
GuardDuty
Inspector

Create alerts for:

Failed Builds
Secret Access
Pipeline Failure
Production Deployment
Drift Detection
Vulnerability Detection
Failed Security Gates

📋 Phase 9 — Executive Security Dashboard

Prepare dashboards showing:

Deployment Frequency
Failed Builds
Critical Vulnerabilities
High Vulnerabilities
Secret Rotation Status
Security Gate Failures
Drift Detection
Production Deployments
Mean Time to Recovery
Compliance Status

🏢 Enterprise Deliverables

Submit the following documents.

Architecture

Enterprise DevSecOps Architecture
CI/CD Architecture
Multi-Account Design
Trust Boundaries

Infrastructure

Terraform Modules
CloudFormation Templates
IAM Design
KMS Design

Security

Security Standards
Pipeline Security Controls
Secret Management Policy
Container Security Policy
IaC Standards
Build Security Standard

Operations

Monitoring Strategy
Incident Response Plan
Secret Rotation Plan
Deployment Process
Change Management

Executive Reports

Risk Assessment
Security Scorecard
Lessons Learned
Final Recommendations

🏆 Enterprise Capstone Lab

You have been hired to redesign CloudNova’s complete DevSecOps platform.

Your platform must include:

✅ GitHub

✅ AWS CodePipeline

✅ AWS CodeBuild

✅ Terraform

✅ CloudFormation

✅ Secrets Manager

✅ Parameter Store

✅ IAM Roles

✅ Amazon ECR

✅ Security Hub

✅ CloudTrail

✅ CloudWatch

✅ Amazon Inspector

All deployments must follow enterprise security standards.

💻 AWS CLI Challenge

List CodePipeline Pipelines

aws codepipeline list-pipelines

List Build Projects

aws codebuild list-projects

List Secrets

aws secretsmanager list-secrets

List Parameters

aws ssm describe-parameters

List ECR Repositories

aws ecr describe-repositories

List Inspector Findings

aws inspector2 list-findings

Validate CloudFormation

aws cloudformation validate-template \
--template-body file://template.yaml

Detect CloudFormation Drift

aws cloudformation detect-stack-drift \
--stack-name SecureStack

Verify Current Identity

aws sts get-caller-identity

📊 Final Security Review

Review the environment.

Verify:

✔ Infrastructure as Code

✔ Secure CI/CD

✔ Secrets Management

✔ Security Testing

✔ Container Security

✔ IAM

✔ Encryption

✔ Monitoring

✔ Logging

✔ Compliance

✔ Production Controls

🔎 Incident Investigation

CloudNova experienced the following incident.

Timeline:

09:00 — Developer commits AWS Secret Key

09:02 — Secret Scan detects credential

09:03 — Build automatically fails

09:04 — Security Team notified

09:06 — Secret rotated

09:12 — Repository cleaned

09:20 — Build rerun successfully

Questions:

Which security controls worked?
How was the incident contained?
What additional improvements would you recommend?

🏢 Enterprise Best Practices

CloudNova standards:

Security built into every stage
Shift Left Security
Least Privilege IAM
Infrastructure as Code
Automated Security Testing
Immutable Infrastructure
Continuous Monitoring
Secure Secrets Management
Automated Compliance
Continuous Improvement

🚫 Common Mistakes

❌ Deploying directly to production.

❌ Hardcoding credentials.

❌ Skipping Pull Requests.

❌ Ignoring security scans.

❌ AdministratorAccess for pipelines.

❌ Manual infrastructure changes.

❌ No drift detection.

❌ No secret rotation.

❌ Sharing production credentials.

❌ No monitoring.

🧪 Final Enterprise Challenge

CloudNova plans to expand globally.

Design a complete enterprise DevSecOps platform supporting:

500+ Developers
1,000+ Repositories
Multi-Region
Multi-Account
Kubernetes
Serverless
Hybrid Cloud
Continuous Deployment
Compliance Automation
Zero Trust
AI-assisted Security Reviews
Enterprise Governance

Prepare:

Architecture
Network Diagram
IAM Design
CI/CD Design
Terraform Repository Structure
CloudFormation Repository
Security Controls Matrix
Secrets Strategy
Monitoring Strategy
Incident Response Plan
Executive Presentation

📚 Module Review

Throughout Module 11 you learned:

Lesson 01

DevSecOps Fundamentals
Secure SDLC
Shift Left Security
DevSecOps Culture

Lesson 02

Infrastructure as Code
AWS CloudFormation
Terraform
Secure Templates
Drift Detection

Lesson 03

CI/CD Pipeline Security
AWS CodePipeline
AWS CodeBuild
Secure Deployments
Pipeline Monitoring

Lesson 04

SAST
DAST
SCA
Secret Scanning
Secrets Manager
Parameter Store
Container Security
Amazon Inspector

📊 Knowledge Check

Why is DevSecOps important?
What is Shift Left Security?
Why should Infrastructure as Code be scanned?
What are the stages of a secure CI/CD pipeline?
Why should production require approvals?
What is the purpose of SAST?
How does DAST differ from SAST?
Why should secrets never be stored in source code?
What is the purpose of AWS Secrets Manager?
How does Amazon Inspector improve container security?
What is Infrastructure Drift?
Why is least privilege important for pipelines?
Why should all deployments be monitored?
How should security findings be prioritised?
What are the key characteristics of an enterprise DevSecOps platform?

💡 Key Takeaways

After completing Module 11, you should be able to:

Design and implement a secure DevSecOps operating model that integrates security throughout the software development lifecycle.
Build Infrastructure as Code using CloudFormation and Terraform while applying secure defaults, policy validation and drift detection.
Design CI/CD pipelines with automated security gates, least-privilege IAM roles, protected branches and controlled production approvals.
Integrate multiple layers of security testing, including SAST, DAST, SCA, IaC validation, secret scanning and container image scanning.
Protect application credentials using AWS Secrets Manager and Systems Manager Parameter Store with encryption, least privilege and rotation.
Secure container-based workloads and software supply chains through image scanning, immutable artefacts and continuous monitoring.
Detect, investigate and respond to DevSecOps security incidents using CloudTrail, CloudWatch, Security Hub, Amazon Inspector and related AWS services.
Produce enterprise-ready documentation, governance artefacts and executive reports that support operational excellence, compliance and continuous improvement.

🎉 Module Complete

Congratulations!

You have successfully completed:

Module 11 — DevSecOps & Infrastructure as Code (IaC) Security

You now understand how modern enterprises securely build, test, deploy and operate cloud-native applications using DevSecOps principles, Infrastructure as Code, secure CI/CD pipelines, automated security testing and cloud-native security controls.

🚀 Next Module

➡️ Module 12 — AWS Security Architecture

In the next module, you will design secure enterprise AWS architectures covering:

AWS Well-Architected Framework
Secure Multi-Account Architecture
Landing Zones
Network Segmentation
Identity Federation
Zero Trust Architecture
Hybrid Cloud Security
High Availability & Resiliency
Secure Application Architecture
Enterprise Security Design Patterns
Security Governance at Scale
End-to-End Enterprise AWS Security Architecture