architecture

An Architecture Decision Record (ADR) documents software design choices by capturing requirements, exploring options, and rationalizing trade-offs. Using ADRs ensures architectural decisions are well-reasoned, systematically documented, and aligned with project constraints and goals.

To choose between a monolith and microservices, gather essential project context like scale, team size, and timeline, then evaluate the trade-offs of each architectural pattern. This systematic evaluation ensures you select a design that defers unnecessary complexity while meeting system requirements.

You document trade-offs for complex systems by applying a structured decision framework that evaluates options against project constraints. This process enforces simplicity by systematically rationalizing architectural choices and recording the final evaluation within an Architecture Decision Record.

You need domain-driven design (DDD) patterns when your software architecture requires structured pattern selection to manage complex business domains. A decision tree helps evaluate your specific project context and constraints to determine if DDD provides the appropriate structural boundaries for your system.

The best way to start designing software architectures for a new microservice is to perform context discovery to understand scale, domain, and constraints before design begins. This prerequisite step guides the pattern selection process and ensures choices enforce simplicity and defer complexity.

The limitation of deferring complexity in software architecture decisions is the risk of underestimating future scale or integration requirements. While this principle enforces initial simplicity, you must systematically document anticipated trade-offs and constraints in an ADR to ensure the architecture remains adaptable.