Aqua Security Serverless Functions vs FunctionShield: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Aqua Security Serverless Functions is a commercial serverless security tool by Aqua Security Software Ltd.. FunctionShield is a free serverless security tool. Compare features, ratings, integrations, and community reviews side by side to find the best serverless security fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Aqua Security Serverless Functions
Teams running AWS Lambda at scale need Aqua Security Serverless Functions because it catches permission creep and runtime code injection before they become breaches, not just after deployment. The shift-left scanning via CI/CD integration combined with NanoEnforcer runtime agents means you're catching vulns early and stopping exploitation attempts in production; NIST ID.RA and DE.CM coverage reflect that dual-layer approach. Skip this if your serverless footprint is minimal or you're still standardizing on a single cloud provider, since the value compounds with workload volume and multi-function complexity.
Developers building on AWS Lambda or Google Cloud Functions who need to lock down function behavior at runtime should start with FunctionShield; it enforces strict allowlists for system calls, file access, and network connections directly in your code rather than relying on perimeter controls. The free, open-source model (40 GitHub stars, no licensing friction) means you can pilot it in staging without procurement delays. Skip this if you're looking for detection and forensics after a breach; FunctionShield is prevention-only, which is either exactly what you want or a deal-breaker depending on your threat model.
