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Ameen Abozaid
Planned lessonARC-007-L01

What makes a principle useful

  • Lesson 1 of 5
  • Architect
On This Lesson 4 topics

This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.

In this lesson

tell real principles from slogans.

Planned topics

  • A principle is a durable rule of choice that guides decisions across projects.
  • Useful: it is specific enough to change a decision and can be disagreed with.
  • Useless: "use best practices"; nobody can choose the opposite.
  • Principles come from business strategy and constraints, not from technology fashion.
Draft outline details

Demonstration

two lines side by side: "Be secure" (platitude) and "Customer data is accessed only through owned APIs, never by direct database reads from other systems" (usable).

Check your understanding

What test shows a principle is not a platitude?

Show answer

A sensible person could argue for the opposite, and it changes some decision.

Practice

Apply this lesson with the module's lab, exercises and quiz.

Lab and exercises Quiz

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