Final answer:
The best way to facilitate the welcome journey that leverages customer data across three data extensions within Contact Builder is to create a single Attribute Group that links Customers to Contacts, Orders to Products, and Products to Customers.
Step-by-step explanation:
The best way to facilitate the welcome journey that leverages customer data across three data extensions (Customers, Orders, and Products) within Contact Builder is to create a single Attribute Group that links Customers to Contacts, Orders to Products, and Products to Customers.
This approach allows for efficient data management and simplifies the process of accessing and using customer data for personalized welcome journeys. By linking all three data extensions through a single Attribute Group, you can easily retrieve relevant information from each extension and build dynamic and targeted customer journeys.