Prowler by Jit.io is an open-source tool designed for AWS security best practices assessments, audits, continuous monitoring, hardening, and forensics readiness. It includes over 200 controls covering various security frameworks such as CIS, PCI-DSS, ISO27001, GDPR, HIPAA, FFIEC, SOC2, AWS FTR, ENS, and custom security frameworks. Prowler helps ensure that AWS environments are secure and compliant with industry standards.