Architecture Principles in TOGAF govern the architecture process, influencing the development, maintenance, and use of the Enterprise Architecture. Here's a detailed explanation:

Definition:

Architecture Principles: These are the fundamental rules and guidelines that inform and support the way in which an organization sets about fulfilling its mission. They affect all phases of the architecture process.

Role in TOGAF:

Guidance and Governance: Architecture Principles provide the foundation for making architecture-related decisions. They guide the development, maintenance, and usage of all architecture artifacts.

Consistency and Alignment: They ensure that all architecture activities are consistent with the overall business strategy and objectives, providing alignment across different architecture domains.

TOGAF ADM Phases:

Preliminary Phase: This phase includes the establishment of architecture principles that will guide the entire architecture effort.

Phase A: Architecture Vision: During this phase, the architecture principles are used to create the vision and scope of the architecture project, ensuring it aligns with the organization's goals.

Examples of Architecture Principles:

Business Principles: These might include ensuring that business processes are customer-focused.

Data Principles: Principles ensuring data accuracy and availability.

Application Principles: Guidelines for application interoperability and usability.

Technology Principles: Standards for technology choices and infrastructure management.

In summary, architecture principles govern the architecture process, affecting its development, maintenance, and use, thereby ensuring alignment with business goals and consistency in architectural decisions.