A canary release involves making a Solution available to whom?

According to the SAFe DevOps Practitioner 6.0 study guide1, a canary release is a type of release on

demand that involves making a Solution available to any subset of users, such as a specific team,

product, or region. A canary release allows the DevOps teams to test the Solution in a controlled

environment and monitor its performance and feedback before rolling it out to the entire customer

base. A canary release can help reduce the risk of introducing errors or failures into production and

improve the quality and reliability of the Solution.