Architecture Principles

Architecture principles are statements that dictate how an organization’s IT resources and capabilities should be designed, implemented, and operated. They are typically endorsed by senior leadership to ensure alignment with broader business objectives and organizational strategy. Effective principles are stable yet flexible; they do not change frequently. They guide decision-making to balance evolving technology trends, security, compliance, and cost considerations.

What are the benefits of architecture principles?

1. Strategic Alignment: They translate organizational strategies into actionable IT directives, ensuring new solutions, projects, and processes stay aligned with organizational goals.
2. Complexity Management: By focusing on foundational rules, they reduce the complexity arising from technology sprawl, redundant solutions, and overlapping initiatives.
3. Decision-Making Framework: Principles serve as a consistent reference point for IT architects, engineers, and leaders, bringing clarity to choices about platforms, solutions, and architectures.
4. Communication Tool: They provide a common language that helps diverse teams and stakeholders understand the rationale behind architectural decisions.

Role of Architecture principles:

Architecture principles can play a wide variety of roles such as

1. Regulative Role: They set boundaries for solution design, specifying what is acceptable within the organization’s landscape and what is not.
2. Instructive Role: They offer guidance on how solutions should be built and maintained, translating abstract goals (e.g., security, performance, cost savings) into actionable best practices.
3. Informative Role: They capture and share institutional knowledge, enabling broad understanding of the reasoning behind key IT decisions.

Components of an architectural principle:

Each architecture principle should contain three core elements:

1. Statement: A concise articulation of the principle.
2. Rationale: A brief explanation of why the principle exists and how it benefits the organization.
3. Implications: The practical outcomes and requirements that follow from applying the principle.

Example of an architectural principle

Buy Before Build

Statement: Whenever possible, favor commercial off-the-shelf (COTS) or Software as a Service (SaaS) solutions over custom-developed software.

Rationale: Commercial solutions often offer faster time-to-value, lower maintenance costs, and vendor support, reducing the total cost of ownership (TCO).

Implications:

• Thoroughly evaluate available market solutions before pursuing custom development.
• Ensure contracts address key requirements around security, compliance, and vendor responsibilities.
• Focus internal development resources on projects providing unique competitive or strategic advantages.

Typically an organization might have 10 to 20 architectural principles that are clear, written in non-technical knowledge, future oriented and periodically reviewed but seldom changed.