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Azure Cloud Migrate

Assess and migrate workloads from AWS, GCP, or other clouds to Azure services.

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references/services/container-apps/fargate-assessment-guide.md

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Assessment: Fargate to Container Apps

Checklist

1. Container Configuration

CPU/Memory: Extract from task definition and verify the requested CPU/memory fits within Azure Container Apps limits for the target environment/region
Container Images: Registry location (ECR), image size, base image
Port Mappings: Exposed ports and protocols

2. Environment & Secrets

Static configuration values (env vars)
Secret references: Secrets Manager ARNs → Key Vault URLs with managed identity
Parameter Store references → App Configuration or Key Vault
Service discovery endpoints

3. Networking

VPC subnets (public vs private) → VNet integration
Security groups → NSG rules
Load balancer type (ALB/NLB) → Container Apps ingress (built-in HTTPS)
Health check configuration and SSL/TLS certificates

4. IAM & Security

Task role policies → Managed Identity + Azure RBAC
ECR pull permissions → ACR role assignment (AcrPull)
Secrets Manager access → Key Vault RBAC (recommended) or access policies for vaults still using access-policy mode

5. Dependencies

Databases: RDS → Azure Database for PostgreSQL/MySQL/SQL
Cache: ElastiCache → Azure Cache for Redis
Storage: S3 → Azure Blob Storage (SDK: boto3 → azure-storage-blob)
Messaging: SQS/SNS → Service Bus / Event Grid
Monitoring: CloudWatch → Azure Monitor / Log Analytics (requires Log Analytics workspace on Container Apps environment)

6. Scaling & Performance

Auto scaling policies (target tracking, min/max tasks)
Request rate and latency requirements
Actual CPU/memory usage vs allocation

Resource Mapping

ECS Task Definition	Container Apps Equivalent
`cpu: "512"` (0.5 vCPU)	`cpu: 0.5`
`memory: "1024"` (MB)	`memory: 1Gi`
`containerPort`	`ingress.targetPort`
`environment`	`env` array
`secrets` (Secrets Manager ARN)	`secrets` with `keyVaultUrl` + `identity`
`logConfiguration` (awslogs)	Log Analytics (requires workspace on environment)
Service Auto Scaling	`scale.rules` (HTTP/CPU/memory/custom)

Complexity Rating

Low: Single container, no VPC, standard env vars, public ingress
Medium: Multiple containers, VPC with private connectivity, secrets, custom IAM
High: Multi-service dependencies, VPN/Direct Connect, cross-account IAM, stateful workloads