Chapter 14: How to Make Architectural Decisions

A practical framework for architectural decision-making: how to frame decisions, evaluate alternatives, manage uncertainty, document reasoning, and build the organizational confidence that lets decisions stick.

What this chapter covers

How to frame architectural decisions clearly
Evaluating alternatives systematically
Architecture Decision Records (ADRs) in practice
Reversible vs. irreversible (one-way door) decisions
Managing decision uncertainty with spikes and prototypes
Building stakeholder confidence in architectural decisions
When to decide vs. when to defer
Common decision-making anti-patterns

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