According to the TOGAF template for Architecture Principles, the Rationale section should describe the relationship to other principles, as well as the business benefits and the intentions of adhering to the principle. The Rationale section should use business terminology and point to the similarity of information and technology principles to the principles governing business operations. The Rationale section should also explain how the principle supports the achievement of the business objectives and key architecture drivers. Reference:
* Architecture Principles Template
* The TOGAF Standard, Version 9.2 - Architecture Principles
* The Open Group Exam OGEA-103 Topic 1 Question 4 Discussion