# Cloud-Native Implementation Manifest

This example demonstrates how to implement the enhanced e-commerce deployment specification (from `06-02-enhanced-deployment-example.specly`) using **AWS cloud-native services** for enterprise-grade, scalable production deployments.

## Overview

The **CloudNativeDeploymentManifest** shows how to implement logical deployment specifications using **AWS managed services** to achieve:
- **Enterprise scalability** with auto-scaling and multi-AZ deployment
- **High availability** with managed services and disaster recovery
- **Security best practices** with encryption, IAM, and network isolation
- **Operational excellence** with monitoring, logging, and automated maintenance

## Architecture Overview

```
┌─────────────────────────────────────────────────────────────────────┐
│                            AWS Cloud                                 │
│  ┌─────────────────────────────────────────────────────────────────┐ │
│  │                      Region: us-west-2                         │ │
│  │                                                                 │ │
│  │  ┌─────────────┐    ┌─────────────┐    ┌─────────────┐        │ │
│  │  │     AZ-a    │    │     AZ-b    │    │     AZ-c    │        │ │
│  │  │   EKS Nodes │    │   EKS Nodes │    │   EKS Nodes │        │ │
│  │  │   Web Apps  │    │   Web Apps  │    │   Web Apps  │        │ │
│  │  └─────────────┘    └─────────────┘    └─────────────┘        │ │
│  │          │                   │                   │             │ │
│  │  ┌───────▼───────────────────▼───────────────────▼──────────┐  │ │
│  │  │              Application Load Balancer                  │  │ │
│  │  └─────────────────────────────────────────────────────────┘  │ │
│  │                                                                 │ │
│  │  ┌─────────────┐    ┌─────────────┐    ┌─────────────┐        │ │
│  │  │   RDS       │    │ ElastiCache │    │ CloudWatch  │        │ │
│  │  │ Multi-AZ    │    │   Cluster   │    │ Prometheus  │        │ │
│  │  │ PostgreSQL  │    │    Redis    │    │   Grafana   │        │ │
│  │  └─────────────┘    └─────────────┘    └─────────────┘        │ │
│  └─────────────────────────────────────────────────────────────────┘ │
│                                                                       │
│  ┌─────────────────────────────────────────────────────────────────┐ │
│  │                      Global Services                            │ │
│  │  ┌─────────────┐    ┌─────────────┐    ┌─────────────┐        │ │
│  │  │ CloudFront  │    │   Route 53  │    │    WAF      │        │ │
│  │  │    CDN      │    │     DNS     │    │  Firewall   │        │ │
│  │  └─────────────┘    └─────────────┘    └─────────────┘        │ │
│  └─────────────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────────┘
```

## Key Implementation Mappings

### SpecVerse Components → AWS Services

| SpecVerse Component | AWS Service | Configuration |
|-------------------|-------------|---------------|
| `Application` | **EKS** + **EC2** | Auto-scaling node groups, managed Kubernetes |
| `Database` | **RDS PostgreSQL** | Multi-AZ, encrypted, automated backups |
| `Cache` | **ElastiCache Redis** | Cluster mode, encryption, automatic failover |
| `MonitoringStack` | **CloudWatch** + **Prometheus** | Managed Prometheus + Grafana workspaces |
| `NetworkPolicy` | **VPC** + **Security Groups** | Private subnets, controlled ingress/egress |
| Load Balancing | **Application Load Balancer** | SSL termination, health checks, auto-scaling |
| CDN | **CloudFront** | Global edge locations, caching policies |
| Security | **IAM** + **Secrets Manager** + **KMS** | Least privilege, encryption at rest/transit |

## Implementation Features

### 🌍 **Global Scale & Performance**
- **Multi-AZ Deployment**: Spread across 3 availability zones
- **CloudFront CDN**: Global content delivery with edge caching
- **Auto Scaling**: Application and infrastructure level scaling
- **Regional Distribution**: Primary region with DR capability

### 🔒 **Enterprise Security**
- **Encryption Everywhere**: At rest (KMS) and in transit (TLS)
- **IAM Roles**: Least privilege access with service-specific roles
- **Secrets Management**: AWS Secrets Manager for credentials
- **Network Security**: VPC with private subnets and security groups
- **Web Application Firewall**: AWS WAF for DDoS and application protection

### 📊 **Comprehensive Observability**
- **AWS CloudWatch**: Native AWS service monitoring
- **Managed Prometheus**: EKS-integrated metrics collection
- **Managed Grafana**: Enterprise dashboards and alerting
- **AWS X-Ray**: Distributed tracing for microservices
- **Performance Insights**: Database performance monitoring

### ⚡ **High Availability & Resilience**
- **Multi-AZ RDS**: Automatic failover database
- **ElastiCache Clustering**: Redis with automatic failover
- **EKS Multi-AZ**: Kubernetes control plane across AZs
- **Cross-Region Backups**: Disaster recovery strategy
- **Circuit Breakers**: Application-level resilience patterns

## Generated Infrastructure

### Terraform Configuration
```hcl
# EKS Cluster
resource "aws_eks_cluster" "ecommerce" {
  name     = "ecommerce-staging"
  role_arn = aws_iam_role.eks_cluster_role.arn
  version  = "1.28"

  vpc_config {
    subnet_ids              = aws_subnet.private[*].id
    endpoint_private_access = true
    endpoint_public_access  = true
    public_access_cidrs     = ["0.0.0.0/0"]
  }

  encryption_config {
    provider {
      key_arn = aws_kms_key.eks.arn
    }
    resources = ["secrets"]
  }
}

# RDS PostgreSQL Cluster
resource "aws_rds_cluster" "ecommerce" {
  cluster_identifier     = "ecommerce-postgres"
  engine                = "postgres"
  engine_version        = "15.4"
  database_name         = "ecommerce"
  master_username       = "postgres"
  manage_master_user_password = true

  vpc_security_group_ids = [aws_security_group.rds.id]
  db_subnet_group_name   = aws_db_subnet_group.main.name

  backup_retention_period = 7
  preferred_backup_window = "03:00-04:00"

  storage_encrypted = true
  kms_key_id       = aws_kms_key.rds.arn

  deletion_protection = true

  performance_insights_enabled = true
}

# ElastiCache Redis Cluster
resource "aws_elasticache_replication_group" "ecommerce" {
  replication_group_id       = "ecommerce-cache"
  description                = "E-commerce session cache"

  node_type                  = "cache.t3.micro"
  port                       = 6379
  parameter_group_name       = "default.redis7"

  num_cache_clusters         = 3
  automatic_failover_enabled = true
  multi_az_enabled          = true

  subnet_group_name = aws_elasticache_subnet_group.main.name
  security_group_ids = [aws_security_group.redis.id]

  at_rest_encryption_enabled = true
  transit_encryption_enabled = true
  auth_token                 = random_password.redis_auth.result
}
```

### Kubernetes Deployment
```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: ecommerce-web
  namespace: ecommerce
spec:
  replicas: 6
  selector:
    matchLabels:
      app: ecommerce-web
  template:
    spec:
      containers:
      - name: web
        image: your-account.dkr.ecr.us-west-2.amazonaws.com/ecommerce-web:latest
        ports:
        - containerPort: 8080
        resources:
          requests:
            memory: "512Mi"
            cpu: "250m"
          limits:
            memory: "1Gi"
            cpu: "500m"
        env:
        - name: DATABASE_URL
          valueFrom:
            secretKeyRef:
              name: ecommerce-database-credentials
              key: connection-string
        - name: REDIS_URL
          valueFrom:
            secretKeyRef:
              name: ecommerce-redis-credentials
              key: connection-string
        livenessProbe:
          httpGet:
            path: /health
            port: 8080
          initialDelaySeconds: 30
          periodSeconds: 10
        readinessProbe:
          httpGet:
            path: /ready
            port: 8080
          initialDelaySeconds: 5
          periodSeconds: 5
```

## Cost Optimization Strategies

### 🎯 **Resource Right-Sizing**
- **Spot Instances**: Use for non-critical workloads (up to 90% savings)
- **Reserved Instances**: 1-3 year commitments for predictable workloads
- **Auto Scaling**: Scale down during low traffic periods
- **Storage Optimization**: Use appropriate EBS volume types

### 📈 **Monitoring & Alerts**
- **Cost Anomaly Detection**: AWS Cost Explorer alerts
- **Resource Utilization**: CloudWatch metrics and recommendations
- **Rightsizing Recommendations**: AWS Compute Optimizer
- **Unused Resource Detection**: AWS Trusted Advisor

## Deployment Strategy

### 1. **Infrastructure Provisioning**
```bash
# Initialize Terraform
terraform init
terraform plan -var-file="production.tfvars"
terraform apply

# Configure kubectl
aws eks update-kubeconfig --region us-west-2 --name ecommerce-staging
```

### 2. **Application Deployment**
```bash
# Deploy using Helm
helm repo add ecommerce ./helm-charts
helm upgrade --install ecommerce ecommerce/ecommerce \
  --namespace ecommerce \
  --create-namespace \
  --values values-production.yaml

# Configure monitoring
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm upgrade --install monitoring prometheus-community/kube-prometheus-stack \
  --namespace monitoring \
  --create-namespace
```

### 3. **Security Hardening**
```bash
# Apply security policies
kubectl apply -f security/network-policies.yaml
kubectl apply -f security/pod-security-standards.yaml

# Configure service mesh (optional)
istioctl install --set values.pilot.env.EXTERNAL_ISTIOD=false
kubectl label namespace ecommerce istio-injection=enabled
```

## AI Implementation Guidance

The manifest provides **comprehensive guidance** for:
- **Infrastructure as Code**: Terraform best practices for AWS
- **Security Hardening**: Multi-layered security implementation
- **Observability Setup**: Complete monitoring and alerting stack
- **High Availability**: Multi-AZ and cross-region strategies
- **Cost Management**: Optimization strategies and monitoring
- **Compliance**: AWS Well-Architected Framework alignment
- **GitOps Integration**: CI/CD pipeline configuration
- **Disaster Recovery**: Backup and restore procedures

This implementation demonstrates how SpecVerse **manifests enable enterprise-grade deployments** by bridging logical specifications with cloud-native infrastructure, providing teams with production-ready, scalable, and secure deployment strategies.

## Diagrams

<div className="diagram-generated">

### Technology Stack

<Mermaid chart={`
graph TB
  %% Manifest Mapping

  subgraph database_layer["🗄️ DATABASE"]
    direction LR
    tech_postgresql_rds("postgresql<br>rds<br>vlatest")
    tech_redis_elasticache("redis<br>elasticache<br>vlatest")
  end

  subgraph infrastructure_layer["🏗️ INFRASTRUCTURE"]
    direction LR
    tech_kubernetes_eks("kubernetes<br>eks<br>vlatest")
    tech_aws_alb("aws<br>alb<br>vlatest")
  end


  style tech_postgresql_rds fill:#e1f5fe,stroke:#01579b,stroke-width:2px,color:#000
  style tech_redis_elasticache fill:#e1f5fe,stroke:#01579b,stroke-width:2px,color:#000
  style tech_kubernetes_eks fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style tech_aws_alb fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
`}/>

### Capability Bindings

<Mermaid chart={`
graph LR
  %% Manifest Mapping

  subgraph capabilities_layer["🎯 CAPABILITIES"]
    direction TB
    cap_0{{"web.*<br>(1 impl)"}}
    cap_1{{"database.*<br>(1 impl)"}}
    cap_2{{"cache.*<br>(1 impl)"}}
    cap_3{{"routing.*<br>(1 impl)"}}
  end

  impl_CloudNativeDeploymentManifest_CloudWebApplication("CloudNativeDeploymentManifest.CloudWebApplication")
  impl_CloudNativeDeploymentManifest_CloudDatabase("CloudNativeDeploymentManifest.CloudDatabase")
  impl_CloudNativeDeploymentManifest_CloudCache("CloudNativeDeploymentManifest.CloudCache")
  impl_CloudNativeDeploymentManifest_CloudLoadBalancer("CloudNativeDeploymentManifest.CloudLoadBalancer")


  %% Relationships
  cap_0 -->|"binds to"| impl_CloudNativeDeploymentManifest_CloudWebApplication
  cap_1 -->|"binds to"| impl_CloudNativeDeploymentManifest_CloudDatabase
  cap_2 -->|"binds to"| impl_CloudNativeDeploymentManifest_CloudCache
  cap_3 -->|"binds to"| impl_CloudNativeDeploymentManifest_CloudLoadBalancer

  style cap_0 fill:#fff3e0,stroke:#e65100,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudWebApplication fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style cap_1 fill:#fff3e0,stroke:#e65100,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudDatabase fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style cap_2 fill:#fff3e0,stroke:#e65100,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudCache fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style cap_3 fill:#fff3e0,stroke:#e65100,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudLoadBalancer fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
`}/>

### Manifest Mapping

<Mermaid chart={`
graph LR
  %% Manifest Mapping

  subgraph manifests_layer["📋 MANIFESTS (Implementation Mapping)"]
    direction TB
    manifest_CloudNativeDeploymentManifest{{"CloudNativeDeploymentManifest<br>v1.0.0<br>Types: 4 | Behaviors: 2"}}
  end

  subgraph implementation_layer["🔧 IMPLEMENTATION (Technology)"]
    direction TB
    impl_CloudNativeDeploymentManifest_CloudWebApplication("CloudWebApplication<br>kubernetes / eks")
    impl_CloudNativeDeploymentManifest_CloudDatabase("CloudDatabase<br>postgresql / rds")
    impl_CloudNativeDeploymentManifest_CloudCache("CloudCache<br>redis / elasticache")
    impl_CloudNativeDeploymentManifest_CloudLoadBalancer("CloudLoadBalancer<br>aws / alb")
  end


  %% Relationships
  manifest_CloudNativeDeploymentManifest -->|"implements"| impl_CloudNativeDeploymentManifest_CloudWebApplication
  manifest_CloudNativeDeploymentManifest -->|"implements"| impl_CloudNativeDeploymentManifest_CloudDatabase
  manifest_CloudNativeDeploymentManifest -->|"implements"| impl_CloudNativeDeploymentManifest_CloudCache
  manifest_CloudNativeDeploymentManifest -->|"implements"| impl_CloudNativeDeploymentManifest_CloudLoadBalancer

  style manifest_CloudNativeDeploymentManifest fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudWebApplication fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudDatabase fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudCache fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
  style impl_CloudNativeDeploymentManifest_CloudLoadBalancer fill:#e8f5e9,stroke:#1b5e20,stroke-width:2px,color:#000
`}/>

</div>