Native AWS security tools — GuardDuty for threat detection, Inspector for vulnerability scanning, Security Hub for aggregation, Macie for data discovery — are good enough that most teams should enable them before buying anything else; third-party platforms earn their place only where AWS stops, which is multi-cloud visibility, application-layer depth, and the fix workflow after detection. That is the short answer. The longer answer is a boundary map: knowing exactly where each native service ends tells you what, if anything, you still need to buy.
What AWS security tools does AWS give you natively?
AWS ships a genuinely broad security portfolio, and the core services divide cleanly by job:
- GuardDuty — threat detection from CloudTrail, VPC Flow Logs, and DNS logs: credential misuse, cryptomining, unusual API activity.
- Amazon Inspector — automated vulnerability scanning for EC2 instances, ECR container images, and Lambda functions.
- Security Hub — aggregates findings from other services and runs configuration checks against standards like CIS AWS Foundations and AWS Foundational Security Best Practices.
- Macie — discovers and classifies sensitive data in S3.
- IAM Access Analyzer — flags resources shared outside your account and unused permissions.
- CloudTrail and AWS Config — the audit backbone: who did what, and how configuration drifted.
- WAF, Shield, and KMS — edge filtering, DDoS protection, and key management.
For a single-cloud AWS estate, enabling GuardDuty, Inspector, Security Hub, and IAM Access Analyzer across all accounts via Organizations is the highest-value first move in any aws security program — hours of work, immediate baseline coverage.
Where do native AWS security tools stop?
Four boundaries recur in practice.
The account boundary. Native tooling sees AWS. If a quarter of your estate runs on Azure, GCP, or on-prem Kubernetes, you either run parallel native stacks per cloud — each with different findings formats and severity models — or you adopt a cross-cloud layer.
The application boundary. Inspector scans operating system packages and language runtimes on instances and images, but it does not do static analysis of your source code, scan your pull requests, or trace whether a vulnerable function is reachable. Code-level risk lives upstream of AWS entirely, in your repositories and CI — which is SCA and SAST territory, not CSPM territory.
The prioritization boundary. Security Hub aggregates findings; it does not deduplicate a CVE reported by Inspector, your container registry scanner, and your SCA tool into one owned, tracked issue. Teams routinely discover that "enable everything" produces tens of thousands of findings with no queue discipline.
The workflow boundary. Native tools detect. Assigning the fix to the owning team, tracking SLA compliance, and proving remediation to an auditor is left to you.
When do third-party platforms beat native tools?
Third-party value concentrates where those boundaries bite. Multi-cloud CSPM platforms (Wiz, Orca, Prisma Cloud and peers) normalize posture across providers and correlate risk paths — a public instance, with a critical CVE, holding a role that can reach a sensitive bucket — in ways Security Hub's flat findings list does not. Application security platforms cover the code-to-cloud gap: scanning dependencies and source before deploy, then connecting build-time findings to the runtime workloads they ship in. And remediation-focused products compete on everything after detection — ownership, deduplication, fix automation, and audit evidence.
The pattern worth resisting is buying a third-party product that merely re-detects what GuardDuty and Inspector already find, at platform prices. If a vendor demo shows you the same CVE list Inspector gives you for free, the value has to come from what happens to that finding next.
What does a sensible hybrid stack look like?
Most mature AWS shops converge on the same shape:
- Native for telemetry and detection inside AWS. GuardDuty, CloudTrail, Config, Inspector, Access Analyzer — enabled organization-wide, delegated-admin to a security account.
- Third-party for what crosses boundaries. One platform for application security (code, dependencies, containers) and — if you are multi-cloud — one for cross-cloud posture.
- One queue. Whatever the sources, findings land in a single prioritized workflow with owners and SLAs, not five consoles.
This division also keeps costs sane. Native services price per-resource or per-GB and scale with usage; platform pricing varies widely enough that it pays to compare models directly — we publish ours — against the consolidation you actually get.
How do costs compare?
Native aws security tools are individually cheap but additive: GuardDuty, Inspector, Config, and Security Hub each meter separately, and Config rules in busy accounts can surprise you. Budget them as a percentage of overall AWS spend and review quarterly. Third-party platforms typically price per workload, per developer, or per resource — which looks expensive next to any single native service, but should be judged against the total: the native services it replaces or contextualizes, plus the engineering hours currently spent stitching consoles together. A platform that saves a security engineer ten hours a week has a clear break-even; one that adds a sixth console does not.
FAQ
Is GuardDuty enough on its own?
No — it covers threat detection well, but it is one layer. GuardDuty will flag an EC2 instance beaconing to a known-bad IP; it will not tell you the instance was compromised through a vulnerable dependency your CI could have caught weeks earlier. Pair it with vulnerability management (Inspector or third-party) and posture checks at minimum.
Do I still need AWS security tools if I use a third-party CSPM?
Keep the telemetry layer regardless: CloudTrail, Config, and GuardDuty produce signals third-party platforms consume rather than replace. Many CSPMs explicitly ingest GuardDuty findings. What you can often skip duplicating is the console layer — if your platform normalizes posture checks, Security Hub becomes an export target rather than your working view.
What is the first AWS security service to enable?
CloudTrail, organization-wide, with logs to a locked-down central bucket — every investigation depends on it. GuardDuty is the strongest second because it requires no agents and starts producing findings within minutes of enablement.
Can native AWS tools handle compliance frameworks like SOC 2?
Partially. Security Hub standards and AWS Config conformance packs map controls to checks, and Audit Manager collects evidence for AWS resources. Gaps appear for anything outside AWS — endpoint controls, HR processes, code review policy — which is why compliance automation usually ends up in a dedicated tool that treats AWS as one evidence source among many.