Comparison · AWS security tooling
Prowler vs CloudArq: two AWS security scanners, different trade-offs
Prowler is the best-known open-source AWS security scanner. CloudArq is a managed SaaS that runs a curated subset of the same checks plus framework mapping and daily re-scans. This guide compares both honestly. If Prowler is the right tool for you, use it — it's free.
Updated 2026-04-19 · ~8 minute read
TL;DR
- Choose Prowler if you have a platform engineer who can run, schedule, and maintain it, and you want free coverage across 300+ checks.
- Choose CloudArq if you want managed scans on a schedule, mapping to SOC 2 / CIS / HIPAA, Claude-generated remediation steps, and you'd rather pay $0–$199/month per AWS account than spend engineering time.
- Both read from your AWS account with a read-only IAM role. Neither modifies infrastructure.
Side by side
| Dimension | Prowler | CloudArq |
|---|---|---|
| License | Apache 2.0 (open source) | Commercial SaaS |
| Hosting | Self-hosted (CLI, Docker, AWS Fargate) | Managed by CloudArq (Hetzner Finland) |
| Setup time | ~6 hours (CloudFormation deploy, IAM role, cron schedule, alerting wiring) | ~5 minutes (CloudFormation template + validation) |
| Monthly engineering time | ~4 hours triage + maintenance | 0 (managed) |
| All-in monthly cost | $0 software + ~$320/mo @ $80/hr engineer time (4 hrs/mo × $80/hr) | $79/mo Pro per AWS account |
| Checks out of the box | ~300 (community-maintained) | 169 (curated, SOC 2 / CIS / HIPAA-focused) |
| Scan scheduling | You configure (cron, Lambda, Step Functions) | Daily on Max, weekly on Pro, 2×/mo on Starter |
| Framework mapping | CIS / NIST / HIPAA / PCI / ISO (check-level tags) | CIS, SOC 2, HIPAA, PCI-DSS, NIST, ISO 27001 with evidence export |
| Remediation guidance | URL in each finding (external docs) | CLI + Terraform + console steps per finding (AI-generated) |
| UI | HTML report or JSON to your own dashboard | Hosted dashboard with finding-status tracking across scans |
| Integrations | Security Hub, SNS, whatever you wire up | Slack, email, generic webhook, PagerDuty (built-in) |
| Pricing | Free (your AWS + operator time) | $0 Starter (under 50 resources) / $79 Pro / $199 Max per AWS account. Organization tier by quote. |
| Support | Community Slack, GitHub issues | Founder-responded email, business-day SLA |
| Best fit | Platform teams who already run infrastructure tooling | 1-50-person SaaS preparing for SOC 2 |
Break-even: if your engineer costs $80/hr fully loaded, CloudArq Pro ($79/mo) pays for itself at 1 hour/month of saved triage time. The table above puts realistic Prowler maintenance at ~4 hrs/mo — so the same engineer hours that would self-host Prowler cover roughly 4× CloudArq Pro accounts and still leave change.
When to choose Prowler
If you have 2+ FTE engineers willing to maintain self-hosted security tooling, Prowler is free and customizable. CloudArq is for teams that don't have that bandwidth. Specifically:
- You already operate an infrastructure team that runs scheduled jobs, owns observability, and can maintain a Python CLI + its dependencies.
- You want the widest possible check coverage — Prowler has ~300 checks across AWS, Azure, GCP, and Kubernetes, with active community contributions.
- Your compliance posture is "we read the HTML report, we write our own evidence" — you don't need mapped exports per-framework.
- You prefer zero vendor lock-in. Prowler is Apache 2.0; the scan is your artifact.
Trade-offs
- Platform-engineer time: someone has to schedule, triage, store, and export results.
- No unified status across scans — Prowler gives you a snapshot; carrying "we're working on this" across runs is your job.
- Remediation is "go read the AWS docs." If you want a ready-to-paste CLI command, you'll need a separate layer.
When to choose CloudArq
- You're a small SaaS preparing for SOC 2, HIPAA, or a security-review checklist from an enterprise prospect — and you'd rather spend $79–$199/month than engineer-hours. See the SOC 2 AWS checklist.
- You want the scans to just run. Daily on Max, weekly on Pro, notifications via Slack or webhook, PDF evidence exports.
- You need per-finding remediation your team can ship today — CLI commands, Terraform blocks, or AWS Console click-paths, generated for every finding.
- You want framework mapping baked in. Every one of the 169 checks is tagged with the control IDs it satisfies in CIS, SOC 2, HIPAA, PCI-DSS, NIST 800-53, and ISO 27001. Read the CIS mapping.
Trade-offs
- Fewer total checks than Prowler (169 vs ~300). CloudArq focuses on the checks a 1-50-person SaaS actually needs; enterprise CSPM and specialty checks are out of scope.
- Commercial license. If you need every pillar of audit coverage to live inside your repos, open-source is a better fit.
- AWS-only. Prowler covers Azure + GCP + Kubernetes; CloudArq is AWS-first and doesn't plan to expand this year.
A decision in one paragraph
If you have a platform engineer with 2-4 hours a week to run Prowler, triage output, and stitch it into your evidence pipeline — use Prowler. It's free and excellent. If you're a founder or a small engineering team staring at a SOC 2 deadline and you'd rather not become the internal security-tooling maintainer — CloudArq is $79/mo per AWS account on Pro and designed for exactly that.
See CloudArq's compliance-gap report on sample data
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