A piece of evidence.

 Source: Software Supply Chain Security Guidance EO 14028 from NISTIR 7692

A piece of evidence, such as text or a reference to a resource, that is submitted to support a response to a question.

 Source: NISTIT 7692

Work products that are produced and used during a project to capture and convey information (e.g., models, source code).

 Source: NIST SP 800-160vlrl from ISO 19014:2020

Evidence used during a DR Exercise/Test to show before/after states of failover or evidence of data and information flow.

 Source: Erwood Group

Merriam-Webster Online Dictionary
artifact (noun)
a) something created by humans usually for a practical purpose , especially an object remaining from a particular period - caves containing prehistoric artifacts
b) something characteristic of or resulting from a particular human institution, period, trend, or individual - self-consciousness … turns out to be an artifact of our education system Times Literary Supplement
a product of character (as in a scientific test) due usually to extraneous (as human) agency - artificial
An artifact is an object or structure made by humans, either intentionally or unintentionally, that has cultural, historical, or scientific significance.