launchpad is a Zircon library that provides the functionality to create and start new processes (including loading ELF binaries, passing initial RPC messages needed by runtime init, etc). It is a low-level library and over time it is expected that few pieces of code will make direct use of it.
Launchpad is designed to give complete control over the creation of a new Process. This includes:
There is extensive documentation about launchpad in its primary header file.