My therapist had a special way of taping my sore ankle that went diagonally across the foot with only three pieces of tape in total, what is this technique called?

Kinesio Taping: Kinesio taping of your ankle is based on diagnostic knowledge of what weakness or injury of muscles/tendons was being treated or prevented. The tape adds support and restricts movement to prevent further injury. Each persons injury/weakness requires a unique arrangement of taping. It is wise to consult the therapist for instructions.