Infrastructure Architecture

Auteur
Affiliations

[Author Name]

Université de Toulon

LIS UMR CNRS 7020

Date de publication

2026-10-03

Purpose of this Document

This document defines the infrastructure architecture for [System Name], including deployment models, environments, and operational requirements.

Infrastructure Strategy

Cloud Strategy: [Cloud-native|Hybrid|Multi-cloud|On-premise]
Deployment Philosophy: [DevOps approach]
Infrastructure as Code: [Approach and tools]
Key Principles:
  - [Principle 1]
  - [Principle 2]
  - [Principle 3]

Infrastructure Model

Architecture Pattern: [Microservices|Serverless|Hybrid|etc.]
Deployment Model: [Blue-green|Canary|Rolling|etc.]
Container Platform:
  Orchestration: [Kubernetes|ECS|Nomad|etc.]
  Registry: [ECR|Docker Hub|GitHub Container Registry|etc.]
  Management: [Tools used]
Scale Requirements:
  Peak Load: [Metrics]
  Normal Load: [Metrics]
  Growth Projections: [Expected changes]

Deployment Architecture

graph TD
    subgraph "Public Internet"
        A[End Users]
        B[Partner Systems]
    end
    
    subgraph "Edge Services"
        C[CDN]
        D[WAF]
        E[Load Balancer]
    end
    
    subgraph "Application Environment"
        F[Container Cluster]
        G[Serverless Functions]
        H[Managed Services]
    end
    
    subgraph "Data Storage"
        I[Databases]
        J[Object Storage]
        K[Caches]
    end
    
    A --> C
    B --> E
    C --> E
    D --> E
    E --> F
    E --> G
    F --> H
    F --> I
    F --> K
    G --> I
    G --> J

Physical Architecture (Cloud-specific)

@startuml
!include <awslib/AWSCommon>
!include <awslib/General/all>
!include <awslib/Compute/all>
!include <awslib/Storage/all>
!include <awslib/Database/all>

package "Production Environment" {
    [Load Balancer] as LB
    [Web Tier] as Web
    [Application Tier] as App
    [Data Tier] as Data
    [Caching Layer] as Cache
    
    LB --> Web
    Web --> App
    App --> Data
    App --> Cache
}

cloud "External Services" {
    [Third-party APIs]
}

App --> [Third-party APIs]
@enduml

Network Architecture

@startuml
nwdiag {
  internet [shape = cloud];
  
  network public {
    internet;
    web01 [address = "10.0.0.1"];
    web02 [address = "10.0.0.2"];
    lb01 [address = "10.0.0.100"];
  }
  
  network private {
    web01 [address = "10.0.1.1"];
    web02 [address = "10.0.1.2"];
    app01 [address = "10.0.1.10"];
    app02 [address = "10.0.1.11"];
  }
  
  network data {
    app01 [address = "10.0.2.10"];
    app02 [address = "10.0.2.11"];
    db01 [address = "10.0.2.20"];
    db02 [address = "10.0.2.21"];
  }
}
@enduml

Platform Configuration

Compute:
  Type: [VM|Container|Serverless|etc.]
  Sizing:
    CPU: [Requirements]
    Memory: [Requirements]
    Instances: [Count/scaling]
  Scaling:
    Strategy: [Auto-scaling approach]
    Triggers: [Metrics that trigger scaling]
    Limits: [Min/max instances]
  Resources:
    Limits: [Resource constraints]
    Requests: [Resource requests]
    Quotas: [Usage quotas]

Network:
  Topology: [Network design]
  Security:
    Zones: [Security zones]
    Firewalls: [Rules and approach]
    WAF: [Web application firewall config]
  Performance:
    Latency: [Requirements]
    Bandwidth: [Requirements]
    Acceleration: [CDN/caching strategies]

Storage:
  Types:
    Block: [Usage and sizing]
    Object: [Usage and sizing]
    File: [Usage and sizing]
  Backup:
    Strategy: [Backup approach]
    Schedule: [Frequency]
    Retention: [Policy]
  Recovery:
    RTO: [Recovery Time Objective]
    RPO: [Recovery Point Objective]
    Plan: [Disaster recovery approach]

Environment Matrix

Environments:
  Development:
    Purpose: Feature development
    Compute: [Specifications, e.g., "t3.medium x 2"]
    Memory: [Allocation, e.g., "8GB per instance"]
    Storage: [Allocation, e.g., "100GB SSD"]
    Network: [Configuration, e.g., "private subnet"]
    Scaling: [Strategy, e.g., "manual"]
    Access: [Restrictions]
    
  Testing:
    Purpose: Integration and load testing
    Compute: [Specifications]
    Memory: [Allocation]
    Storage: [Allocation]
    Network: [Configuration]
    Scaling: [Strategy]
    Access: [Restrictions]
    
  Staging:
    Purpose: Pre-production verification
    Compute: [Specifications]
    Memory: [Allocation]
    Storage: [Allocation]
    Network: [Configuration]
    Scaling: [Strategy]
    Access: [Restrictions]
    
  Production:
    Purpose: Live system
    Compute: [Specifications, e.g., "t3.large x 4"]
    Memory: [Allocation, e.g., "16GB per instance"]
    Storage: [Allocation, e.g., "500GB SSD"]
    Network: [Configuration, e.g., "private subnet"]
    Scaling: [Strategy, e.g., "auto (50-80% CPU)"]
    Access: [Restrictions]

Infrastructure as Code Examples

Terraform Example

# Terraform example for core infrastructure
provider "aws" {
  region = "us-west-2"
}

resource "aws_vpc" "main" {
  cidr_block = "10.0.0.0/16"
  
  tags = {
    Name = "main-vpc"
    Environment = "production"
  }
}

resource "aws_subnet" "public" {
  vpc_id     = aws_vpc.main.id
  cidr_block = "10.0.1.0/24"
  
  tags = {
    Name = "public-subnet"
  }
}

resource "aws_ecs_cluster" "main" {
  name = "service-cluster"
  capacity_providers = ["FARGATE"]
}

resource "aws_ecs_task_definition" "app" {
  family = "service"
  requires_compatibilities = ["FARGATE"]
  cpu = 256
  memory = 512
  
  container_definitions = jsonencode([
    {
      name = "app"
      image = "app:latest"
      essential = true
      portMappings = [
        {
          containerPort = 8080
          hostPort = 8080
        }
      ]
    }
  ])
}

Kubernetes Example

# Example Kubernetes deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: app-deployment
  labels:
    app: my-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
      - name: app
        image: my-app:latest
        ports:
        - containerPort: 8080
        resources:
          limits:
            cpu: "0.5"
            memory: "512Mi"
          requests:
            cpu: "0.2"
            memory: "256Mi"
        livenessProbe:
          httpGet:
            path: /health
            port: 8080
          initialDelaySeconds: 30
          periodSeconds: 10

Operational Considerations

Monitoring:
  Tools: [List of monitoring tools]
  Key Metrics:
    - [Metric 1]: [Description and thresholds]
    - [Metric 2]: [Description and thresholds]
  Alerts:
    - [Alert condition 1]: [Response procedure]
    - [Alert condition 2]: [Response procedure]

Logging:
  Strategy: [Centralized/distributed]
  Retention: [Policy]
  Key Logs:
    - [Log type 1]: [Purpose and location]
    - [Log type 2]: [Purpose and location]

Backup & Recovery:
  Data Backup:
    - [Database]: [Strategy and schedule]
    - [File storage]: [Strategy and schedule]
  System Backup:
    - [Configuration]: [Approach]
    - [Images]: [Approach]
  Disaster Recovery:
    - [Scenario 1]: [Recovery process]
    - [Scenario 2]: [Recovery process]

Security Controls

Network Security:
  - Perimeter: [Firewalls, WAF, etc.]
  - Segmentation: [Network isolation approach]
  - Encryption: [TLS versions, certificates]

Access Control:
  - Identity: [IAM approach]
  - Authentication: [Methods]
  - Authorization: [Policies]
  - Least Privilege: [Implementation]

Compliance:
  - Regulations: [Applicable requirements]
  - Auditing: [Approach]
  - Evidence: [Collection method]

Cost Optimization

Resource Efficiency:
  - Right-sizing: [Approach]
  - Auto-scaling: [Strategy]
  - Reserved Instances: [Strategy]

Cost Allocation:
  - Tagging: [Strategy]
  - Chargeback: [Method]
  - Monitoring: [Tools]

Optimization Strategies:
  - Storage Tiering: [Approach]
  - Spot Instances: [Usage]
  - Resource Scheduling: [Off-hours strategy]

Template Validation Checklist

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