What this means
You can use ARC XT in internal or commercial environments subject to the Apache-2.0 terms. The license requires preservation of notices and provides the standard contribution and patent language associated with Apache-2.0.
License
ARC XT is distributed under Apache-2.0.
ARC XT and the related public beta materials are released under the Apache License 2.0. This gives teams broad rights to use, study, and adapt the software while preserving the required notices and license conditions.
Canonical source
The canonical Apache-2.0 text is published in the public ARC XT visibility repository and also ships with official release artifacts. If there is ever a discrepancy, rely on the published license notice that accompanies the release.