The modern application landscape is rapidly evolving, creating new tools and technologies that allow organizations to deploy production code faster. However, this evolution has also led to significant changes in the risks to application security, requiring a shift in the security discipline to adapt to new types of attacks. Traditional solutions like Dynamic Application Security Testing (DAST) have become widely used, but they have limitations, including lack of granular visibility into an application's code and architecture, which can lead to gaps in an organization's overall security strategy. An instrumentation-based approach through Interactive Application Security Testing (IAST) offers a solution by providing continuous monitoring of production traffic for vulnerabilities, real-time security insights, and greater coverage against a wider range of vulnerabilities than traditional solutions. IASTs like Datadog Code Security enable teams to detect deep-level vulnerabilities that affect an application's code or architecture, provide context for finding the source of a detected vulnerability, and offer 100 percent coverage against the OWASP benchmark, ensuring complete accuracy in detecting vulnerabilities.