skillful means

In the Pali tradition, wisdom that transforms the far-reaching practices into the collections necessary to attain full awakening. (Pali: upāyakosalla)

In the Sanskrit tradition, the way fully awakened buddhas and bodhisattvas explain the Dharma and adapt their behavior to best communicate with sentient beings who have unique needs and capacities. (Sanskrit: upāya-kauśalya; upāya)