Attack surface management is a comprehensive approach to identifying and mitigating vulnerabilities in an organization's assets, encompassing both known asset inventory and real risk. It involves defining the attack surface, prioritizing it, and taking action to reduce risk faster than attackers. The solution requires building a business case that quantifies the risk reduction potential, using metrics such as Return On Security Investment (ROSI). Attack Surface Management (ASM) solutions can save resources by connecting organizations to a global network of reconnaissance experts, automating discovery, and providing rapid inventory population and categorization. ASM also helps mitigate reputational damage caused by subdomain takeovers and other business inconsistencies that scanners may miss. The solution is particularly useful in scenarios like M&A, digital transformation, or sudden shifts to remote work. When choosing the right solution, it's essential to consider both automated discovery and management tools and those that can discover and act on vulnerabilities, as human guidance is often necessary for effective results.