Elastic Beanstalk & Containers

AWS offers multiple ways to deploy applications — from fully managed platforms (Elastic Beanstalk) to container orchestration (ECS, EKS, Fargate).

Analogy: EC2 is like building a house from scratch. Elastic Beanstalk is like buying a pre-fab house kit. ECS/Fargate is like using shipping containers to build modular apartments.

Elastic Beanstalk

Elastic Beanstalk is a PaaS (Platform as a Service) — you upload your code, and AWS handles provisioning, load balancing, scaling, and monitoring.

flowchart TB
    Dev["Developer uploads code"] --> EB["Elastic Beanstalk<br/>Auto-provisions:"]
    EB --> EC2[EC2 instances]
    EB --> ELB[Load balancer]
    EB --> ASG[Auto scaling group]
    EB --> RDS[(Database - optional)]
    EB --> Monitoring[CloudWatch monitoring]

    EC2 --> App["Application running ✅"]

    style Dev fill:#3b82f6,color:#fff
    style EB fill:#7c3aed,color:#fff
    style App fill:#059669,color:#fff

Deploy a Node.js app:

# Initialize Beanstalk
pip install awsebcli
eb init

# Create environment and deploy
eb create production
eb deploy

# Open the app in browser
eb open

Feature	Detail
Supported languages	Node.js, Python, Java, .NET, PHP, Ruby, Go, Docker
Deployment	Zip upload, Git deploy, or CI/CD pipeline
Scaling	Auto-scaling based on CPU/memory/request count
Updates	Rolling, blue/green, or immutable deployments

ECS & Fargate — Containers on AWS

ECS (Elastic Container Service) runs Docker containers on AWS. Fargate is the serverless version — no EC2 instances to manage.

flowchart TB
    subgraph ECS Options
        EC2Mode["ECS with EC2<br/>You manage the cluster<br/>Pay for EC2 instances"]
        FargateMode["ECS with Fargate<br/>AWS manages servers<br/>Pay per container vCPU/memory"]
    end

    Both["Both support:"] --> Task[Task definitions<br/>(Docker compose for AWS)]
    Task --> Service[Services<br/>(keep N containers running)]
    Service --> ALB[Load balancer integration]
    Service --> Auto[Auto-scaling]

    style EC2Mode fill:#3b82f6,color:#fff
    style FargateMode fill:#059669,color:#fff

Fargate task definition example:

{
  "family": "my-app",
  "containerDefinitions": [
    {
      "name": "app",
      "image": "nginx:latest",
      "memory": 512,
      "cpu": 256,
      "portMappings": [{ "containerPort": 80 }]
    }
  ]
}

Choosing a Compute Service

flowchart TB
    Q1["What are you building?"] --> C1{"Need full<br/>server control?"}

    C1 -->|"Yes (SSH, install anything)"| EC2["EC2<br/>Full control"]
    C1 -->|"No, just run code"| C2{"Containers?"}

    C2 -->|"Yes"| C3{"Manage servers?"}
    C2 -->|"No"| C4{"Simple app?"}

    C3 -->|"Not really"| Fargate["Fargate<br/>Serverless containers"]
    C3 -->|"Yes, I want control"| ECS["ECS (EC2 mode)<br/>Managed containers"]

    C4 -->|"Yes, upload & go"| Beanstalk["Elastic Beanstalk<br/>PaaS — easy deploy"]
    C4 -->|"No, quick tasks"| Lambda["Lambda<br/>Serverless functions"]

    style EC2 fill:#ef4444,color:#fff
    style Fargate fill:#059669,color:#fff
    style ECS fill:#3b82f6,color:#fff
    style Beanstalk fill:#7c3aed,color:#fff
    style Lambda fill:#f59e0b,color:#fff

Quick Reference

Service	Type	Best For
EC2	IaaS	Full control, any workload
Lambda	Serverless	Event-driven, short tasks
Elastic Beanstalk	PaaS	Simple app deployment
ECS + Fargate	Serverless containers	Docker apps without managing servers
ECS + EC2	Container orchestration	Large-scale Docker with full control
EKS	Kubernetes	Already using Kubernetes

In Simple Words

Elastic Beanstalk = simplest way to deploy apps — upload code, it handles the rest
ECS = run Docker containers on AWS; Fargate = serverless containers (no servers to manage)
Use EC2 when you need full control, Lambda for quick serverless tasks
Use Elastic Beanstalk for “I just want my app running” scenarios
Use Fargate for containerized apps without managing EC2 instances