Interactive Application Security Testing (IAST) with session replay lets you capture the exact runtime state of your application at the moment a vulnerability is triggered. No static scan noise. No blind code review. You see the real request, the stack trace, the variable values, and the execution path — all aligned in a replay you can scrub through like a timeline.
Traditional IAST tools detect issues while the application runs, but the evidence is often scattered. Session replay adds the missing context. It records every relevant detail: HTTP headers, payloads, method calls, backend responses, environment variables, and conditional branches. When a flaw emerges, you can replay how it unfolded, click from source to sink, and confirm the exploit path in seconds.
The technical benefit is precision. False positives drop. Fixes get faster. You don’t waste cycles reproducing a bug from vague logs or incomplete reports. And because the replay is tied directly to runtime analysis, it shows the exact code responsible, whether in a Java Spring service, a Node.js API, or a Python Flask route.