The latest version of Security+ SY0-601 have 5 Domains: Domain 1.0: Attacks, Threats, and Vulnerabilities (24%) Domain 2.0: Architecture and Design (21%) Domain 3.0: Implementation (25%) Domain 4.0: Operations and Incident Response (16%) Domain 5.0: Governance, Risk, and Compliance (14%) https://www.infosectrain.com/blog/comptia-security-sy0-601-domain-2-architecture-and-design/