You can configure declarative rules based on relationships and match records. When similar source records are related to another record through a common relationship, the match process considers them as matching records.
For example, consider two users, William Kenneth and William K, who work for Unity Tech. The match process matches the William Kenneth and William K records because they both have the employee relationship with the same organization, Unity Tech.
Consider another scenario where a user, William Kenneth, works for Unity Tech, and another user, Will Kenneth, works for Synergy Solutions. The match process doesn't match the William Kenneth and Will Kenneth records because they aren't related to the same organization through the employee relationship.