Developer Transition Kit

The Developer Transition Kit (DTK) refers to two prototype Mac computers made available to software developers by Apple. The first DTK was released in 2005 before the Mac transition to Intel processors to assist developers during the transition from PowerPC processors to Intel x86-64 processors. A second DTK was released in 2020 before the Mac transition to Apple silicon as part of Apple's transition from Intel processors to its Apple silicon platform based on the ARM64 architecture.