text: Chapter 2
  center provide always-on, secure data storage. This data storage capability enables deploying Soldiers and
  units to take their home-station information with them whenever and wherever they deploy by transferring
  the data from their home station data center to the data center serving their deployment area of operations.
  Core data centers support the DODIN worldwide so users can access Army, joint, and multinational data,
  applications, and information services from anywhere, at any time, in any operational environment
  COMMAND AND CONTROL
  2-229. United States Cyber Command has the Unified Command Plan mission to operate, secure, and
  defend the DODIN. For unity of command and unity of effort, Joint Force Headquarters-DODIN exercises
  delegated directive authority over all DOD Services and agencies for DODIN operations and defensive
  cyberspace operations-internal defensive measures. Within the Army, ARCYBER plans and directs
  cyberspace operations, including DODIN operations.
  Note. The Director of the Defense Information Systems Agency is designated as the Commander,
  Joint Force Headquarters-DODIN.
  ARCHITECTURE
  2-230. The DODIN architecture identifies priority areas, principles, rules, and activities to implement a
  manageable set of enterprise-wide capabilities. The architecture provides a common vocabulary for
  describing the capabilities, activities, and services to achieve an integrated joint network.
  Cloud Computing
  2-231. Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of
  configurable computing resources—networks, servers, storage, applications, and services—that can be
  rapidly provisioned and released with minimal management effort or service provider interaction. Users can
  access cloud services without geographic limitations, as long as they have a connection to the DODIN.
  2-232. Cloud services may reside at a DOD core data center or be leased from a commercial cloud service
  provider. Units and commands can lease virtual servers or services to fulfill temporary requirements without
  going through the lengthy acquisition cycle and terminate the lease when they no longer need the services.
  Cloud-based solutions reduce the Army’s ownership, operation, and sustainment costs for information
  technology hardware and software. Army units acquire cloud services through the DOD core data center, or
  acquire commercial cloud services according to the guidelines in Memorandum, DOD CIO, 15 December
  2014, subject: Updated Guidance on the Acquisition and Use of Commercial Cloud Computing Services.
  Defense Information Systems Network
  2-233. The DISN is the DOD enterprise network for data, video, and voice services. DISN services include
  SIPRNET, NIPRNET, Joint Worldwide Intelligence Communications System, video teleconferencing,
  Defense Switched Network, Defense Red Switched Network, Defense Research Engineering Network, and
  mission partner environment.
  2-234. The three segments of the DISN are the sustaining base, long-haul transport, and deployed. The
  long-haul segment provides network transport between the sustaining base and deployed network elements.
  Satellite Transport
  2-235. Satellite transport includes all DOD data and voice satellite communications. Satellite
  communications is a key method of network transport. Satellite communications capabilities, such as
  Wideband Global Satellite Communications, extend the DODIN worldwide to users without copper or fiber
  optic cable connections. Army satellite communications systems operate over military and commercial
  communications satellites. The extended range of satellite communications allows Signal forces to quickly
  establish connectivity within or between theaters. Using satellite communications transport allows Army