Hey everyone, I'm trying to figure out the best security scanning setup for our new ECS cluster. We're using Terraform for infra and storing container images in JFrog Artifactory.
I see that JFrog Xray is already in the platform and can scan our artifacts for CVEs. But my lead is asking about runtime protection and says we should look at Aqua Security. I'm a bit confused about what each one actually does in practice.
From what I read:
* Xray scans the image in the registry and the build ingredients.
* Aqua seems to do that too, but also enforces policies while the container is running in production.
Could someone explain the real-world difference, especially for someone managing this with Terraform? Is it common to use both, or is it one-or-the-other? I'm worried about complexity and cost.
For example, if I'm deploying with a simple Terraform `aws_ecs_task_definition`, where would each tool hook in?
```hcl
resource "aws_ecs_task_definition" "app" {
family = "myapp"
container_definitions = jsonencode([
{
name = "myapp"
image = "${aws_ecr_repository.app.repository_url}:latest"
# Where does runtime protection happen here?
}
])
}
```
Thanks for any clarity!
I'm Amy, a platform engineer at a mid-size fintech, where we manage about 300 microservices on ECS and EKS, using Terraform for everything and Artifactory for our artifact hub. We've evaluated both tools, and we currently run Aqua in production for our core payment services.
Here's how they break down on the criteria you'd care about:
1. **Primary Function and Fit**: JFrog Xray is primarily an artifact scanner and SCA tool integrated into your existing CI/CD and registry. It's great for mid-market teams already bought into the JFrog platform who want a unified bill. Aqua is a dedicated container security platform targeting enterprise; its real strength is runtime protection (enforcing policies like file integrity, network restrictions, and process whitelisting on running containers). If you just need CVE scanning on images and dependencies, Xray works. If you need to stop a running container from spawning a shell or calling home, you need Aqua.
2. **Integration and Deployment Effort**: Xray was about a week to configure for us, mostly tuning scan policies in the Artifactory UI. It hooks into your existing CI pipeline and registry, so it's low friction. Aqua required about 3-4 weeks for a full POC. You deploy its agents (enforcers) as DaemonSets on EKS or on each ECS host, and it needs a backend database. For your Terraform ECS task, Aqua's runtime hook happens via its agent on the EC2 host or by injecting a sidecar if you're using Fargate. Xray doesn't touch the running task at all.
3. **Real Cost Range**: With Xray, you're typically looking at an add-on to your Artifactory subscription; for 150 developers, our quote was in the $12k-$18k annual range. Aqua's pricing is based on protected hosts or containers; for our 50 core production hosts, it runs about $45k/year. The hidden cost with Aqua is operational overhead - managing its console and enforcer updates. The hidden cost with Xray is that you might still need a separate runtime tool.
4. **Where Each One Clearly Wins (and Breaks)**: Xray wins on unified platform experience and software bill of materials (SBOM) generation. It breaks when you need to respond to a live incident; it can't kill a malicious process. Aqua wins on runtime defense and granular policy enforcement (like blocking a container that tries to mount the Docker socket). It breaks on developer experience; its vulnerability reports can be noisy, and tuning policies is a dedicated role.
Given your setup with Artifactory already, I'd recommend starting with Xray for artifact scanning and adding Aqua only if your lead's runtime concerns are tied to a specific compliance need (like PCI-DSS) or you have a history of incidents in production. To make a clean call, tell us: what's the compliance driver (if any), and are you using Fargate or EC2-backed ECS?
Cloud cost nerd. No, I don't use Reserved Instances.
Totally agree about the integration effort difference. We also use Artifactory and found Xray's setup to be super quick, almost a non-event.
But I'd add a caveat to the "week vs. 3-4 weeks" timeline for Aqua. That's accurate for deployment, but the real time sink comes after, when you're tuning those runtime policies. You need good observability to decide what's "normal" for each container's behavior, otherwise you'll drown in alerts or break things. That part took our team another couple of months to feel confident about.
Keep automating!