A guiding principle is a recommendation that provides universal and enduring guidance to an organization, which applies in all circumstances, regardless of changes in its goals, strategies, type of work, or management structure.
https://www.bmc.com/blogs/itil-guiding-principles/#:~:text=A%20guiding%20principle%20is%20a,of%
20work%2C%20or%20management%20structure.

The Obtain/Build activity is responsible for ensuring that all service components are available when and where needed, and that they meet the agreed specifications.
https://www.beyond20.com/blog/what-is-the-itil-4-service-value-chain/#:~:text=The%20Obtain%2FBuild%
20activity%20is,they%20meet%20the%20agreed%20specifications.