2026 Comparison
service
Data last verified: January 2026

IAST vs DAST: Interactive vs Dynamic Security Testing

IAST instruments the application. DAST tests from outside.

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Pricing verified Q1 202645+ vendor interviews127+ data sourcesUpdated monthly

Side-by-Side Comparison

FactorIASTDAST
HowInstrumented agentExternal testing
AccuracyVery highModerate
SetupRequires agent installNo application changes
PerformanceSome overheadNo impact
CoverageDeep, code-levelSurface, behavior

Our Verdict

IAST for development. DAST for production testing without code access.

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Research Methodology

Pricing data compiled from 127+ vendor quotes, 45+ customer interviews, and public RFP responses. Reviewed by security industry experts with 20+ years combined experience.

Last verified: January 2026 • Next update: April 2026

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