The "Joint" Card: One physical card designed for multiple recipients (e.g., "Happy Birthday to the Triplets!" or "To our May Birthdays"). Variable Data Printing (VDP): A single design template where the printer automatically swaps out names, ages, or photos for 50 different people in one print run. The "Office Mega-Card": Large format (A3 or bigger) designed for an entire team to sign for one or more colleagues.