Defang vs Docker Compose on EC2

You SSH into an EC2 instance, install Docker, copy your compose.yaml, and run docker compose up -d. It works. Your app is live.

But look at what's missing.

The Comparison

| Capability | EC2 + Docker Compose | Defang + ECS/Fargate | |-----------|---------------------|----------------------| | Deploy command | ssh + docker compose up -d | defang compose up --provider=aws | | Docker Compose file | Same compose.yaml | Same compose.yaml | | Auto-scaling | None (single instance) | ECS auto-scaling built in | | Load balancing | None (or DIY nginx) | Managed ALB, automatic | | SSL certificates | Manual (certbot + cron) | Automatic (ACM) | | Zero-downtime deploys | No — containers restart | Rolling updates via ECS | | Database | Container on the VM (data lost if VM dies) | Managed RDS with backups | | Secrets management | .env files on disk | AWS Secrets Manager | | Multi-AZ redundancy | Single instance, single AZ | Multi-AZ by default | | OS patches | You manage them | No OS to manage (Fargate) | | Monitoring | DIY (install agents) | CloudWatch integrated | | Log management | DIY (log rotation, shipping) | CloudWatch Logs automatic |

The Hidden Platform You End Up Building

It starts with docker compose up -d on an EC2 instance. Then you need HTTPS, so you install nginx and certbot. Then you need the cert to auto-renew, so you add a cron job. Then you need backups, so you write a script. Then you need monitoring, so you install an agent.

Six months later, you're maintaining:

nginx reverse proxy with upstream configs
certbot with renewal timers and hooks
Backup crons for database dumps to S3
Monitoring agents (Datadog, New Relic, or Prometheus)
Log rotation config so your disk doesn't fill up
SSH key management for your team
systemd services to restart Docker on boot
Security updates — unattended-upgrades, reboots, kernel patches
Firewall rules — iptables or security groups, manually maintained

You started with a Docker Compose file and ended up building an ad-hoc PaaS. Every piece is another thing that can break at 3am.

Same Docker Compose File, Production Outcome

The key insight: the exact same compose.yaml works with both approaches. The difference is what happens around it.

On EC2:

# Copy your compose file to the server
scp compose.yaml ec2-user@your-instance:~/app/

# SSH in and run it
ssh ec2-user@your-instance
cd ~/app && docker compose up -d

# Then spend weeks building everything else...

With Defang:

# Same compose.yaml, production infrastructure
defang compose up --provider=aws

# That's it. ECS, ALB, RDS, SSL, monitoring — done.

When EC2 Makes Sense

EC2 with Docker Compose is a reasonable choice when:

Hobby projects where downtime is acceptable
Internal tools used by a small team
Specific instance types you need (GPU, high-memory)
Learning — it's a great way to understand what production infrastructure actually requires
Budget is the only priority and your time is free

When to Choose Defang

Choose Defang when your Docker Compose app needs to be production-ready:

You need zero-downtime deploys without building a blue-green system
You need managed databases that survive instance failures
You need auto-scaling without manual intervention
You need SSL certificates that renew themselves
You want to deploy in minutes, not spend weeks building infrastructure
Your team's time is better spent on the application, not the platform

Try It

Take the compose.yaml you'd run on EC2 and deploy it with Defang instead:

# Install Defang
brew install defang-io/defang/defang

# Deploy your existing compose.yaml to AWS
defang compose up --provider=aws

Same Docker Compose file. Production AWS infrastructure. No platform to maintain.