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Application security practiceAdvanced

Serverless Security

Serverless security protects event-driven functions and managed compute services by controlling code, identities, triggers, data, dependencies, and runtime behavior.

What it means

The provider manages servers and portions of the runtime, while the customer remains responsible for application logic, permissions, inputs, secrets, dependencies, and service configuration.

Why it matters

Short-lived execution reduces some traditional host concerns but increases reliance on identity, event sources, managed integrations, and observability.

Practical focus

  • Give each function minimal permissions
  • Validate every trigger and untrusted input
  • Monitor invocation patterns, failures, and downstream actions

Common mistakes

  • Assuming no servers means no security responsibility
  • Sharing one execution role across many functions
  • Logging sensitive event payloads

Certification relevance

This subject appears in or supports the following certification bodies of knowledge:

AWS Cloud PractitionerAzure AZ-900Google Cloud Digital LeaderCompTIA Cloud+GIAC GCLDISC2 CCSPAzure FundamentalsISC2 CISSPMicrosoft AZ-900

Authoritative sources