A major application, general support system, high impact program, physical plant, mission critical system, personnel, equipment, or a logically related group of systems.
Source(s):
CNSSI 4009-2015 under asset

  An item of value to stakeholders. An asset may be tangible (e.g., a physical item such as hardware, firmware, computing platform, network device, or other technology component) or intangible (e.g., humans, data, information, software, capability, function, service, trademark, copyright, patent, intellectual property, image, or reputation). The value of an asset is determined by stakeholders in consideration of loss concerns across the entire system life cycle. Such concerns include but are not limited to business or mission concerns.
Source(s):
NIST SP 800-160 Vol. 2 under asset from NIST SP 800-160 Vol. 1

  Anything that has value to an organization, including, but not limited to, another organization, person, computing device, information technology (IT) system, IT network, IT circuit, software (both an installed instance and a physical instance), virtual computing platform (common in cloud and virtualized computing), and related hardware (e.g., locks, cabinets, keyboards).
Source(s):
NISTIR 7693 under Asset
NISTIR 7694 under Asset

  Resources of value that an organization possesses or employs.
Source(s):
NISTIR 8011 Vol. 1 under Asset

  Anything that can be transferred.
Source(s):
NISTIR 8202 under Assets

  The data, personnel, devices, systems, and facilities that enable the organization to achieve business purposes.
Source(s):
NISTIR 8286 under Assets from NIST Cybersecurity Framework Version 1.1

  An item of value to achievement of organizational mission/business objectives. Note 1: Assets have interrelated characteristics that include value, criticality, and the degree to which they are relied upon to achieve organizational mission/business objectives. From these characteristics, appropriate protections are to be engineered into solutions employed by the organization. Note 2: An asset may be tangible (e.g., physical item such as hardware, software, firmware, computing platform, network device, or other technology components) or intangible (e.g., information, data, trademark, copyright, patent, intellectual property, image, or reputation).
Source(s):
NIST SP 800-160 Vol. 1 under asset

  An item of value to achievement of organizational mission/business objectives. Note 1: Assets have interrelated characteristics that include value, criticality, and the degree to which they are relied upon to achieve organizational mission/business objectives. From these characteristics, appropriate protections are to be engineered into solutions employed by the organization. Note 2: An asset may be tangible (e.g., physical item such as hardware, software, firmware, computing platform, network device, or other technology components) or intangible (e.g., information, data, trademark, copyright, patent, intellectual property, image, or reputation).
Source(s):
NIST SP 800-160 Vol. 1 under asset