This answer considers scalability as the most important aspect of a potential solution for NTO’s security challenge. Scalability refers to the ability of a system to handle increased workload or demand without compromising performance or functionality. Since NTO plans to significantly grow its workforce, it needs a security solution that can accommodate more users, data, and features without compromising security or efficiency. References: https://trailhead.salesforce.com/en/content/learn/modules/security_basics/security_basics_intro