“DevOps in Terraform: 6.1 Introduction: The Execution Model 54 6.1.1 How Terraform Works 55 6.1.2 The Licensing Split 56 6.2 Providers 56 6.2.1 Version Pinning 56 6.2.2 Aliases and Multi-Region, Multi-Account 57 6.2.3 Authentication 57 6.3 State 58 6.3.1 Why It Exists 58 6.3.2”, in NextGen DevOps: Enterprise AI Features & Autonomous Operations, Wissira Press, 2026. Accessed: Oct. 26, 2026. [Online]. Available: https://books.wissira.us/index.php/WIL/catalog/book/160/chapter/1395