Customization in creating value $($mass customization$),$ what type of Mass Customization best describes customer.co$-$designs products or services which are then made$-$to$-$order, example Aircraft?

Bundle$-$to$-$order

Engineer$-$to$-$order

Assemble$-$to$-$order

Match$-$to$-$order OR Locate$-$to order

Make$-$to$-$order