  The preponderance of matter over antimatter in the early universe, the
dynamics of the supernovae that produced the heavy elements necessary for life,
and whether protons eventually decay -- these mysteries at the forefront of
particle physics and astrophysics are key to understanding the early evolution
of our universe, its current state, and its eventual fate. The Deep Underground
Neutrino Experiment (DUNE) is an international world-class experiment dedicated
to addressing these questions as it searches for leptonic charge-parity
symmetry violation, stands ready to capture supernova neutrino bursts, and
seeks to observe nucleon decay as a signature of a grand unified theory
underlying the standard model.
  The DUNE far detector technical design report (TDR) describes the DUNE
physics program and the technical designs of the single- and dual-phase DUNE
liquid argon TPC far detector modules. Volume III of this TDR describes how the
activities required to design, construct, fabricate, install, and commission
the DUNE far detector modules are organized and managed.
  This volume details the organizational structures that will carry out and/or
oversee the planned far detector activities safely, successfully, on time, and
on budget. It presents overviews of the facilities, supporting infrastructure,
and detectors for context, and it outlines the project-related functions and
methodologies used by the DUNE technical coordination organization, focusing on
the areas of integration engineering, technical reviews, quality assurance and
control, and safety oversight. Because of its more advanced stage of
development, functional examples presented in this volume focus primarily on
the single-phase (SP) detector module.
