Explanation
Customer Community Plus and Education Data Architecture (EDA) are two options that are required to use Advisor Link. Customer Community Plus is a license type that enables users to access Advisor Link features such as early alerts, appointments, and program plans from a portal. EDA is a data model that provides the foundation for Advisor Link and other education solutions. Person Accounts and Lightning Scheduler are not required to use Advisor Link. References:
https://help.salesforce.com/s/articleView?id=sf.eda_advisor_link_requirements.htm&type=5
https://www.salesforce.org/advisor-link/