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Open sessions

Architecture Review Office Hours

A recurring open session to pressure-test one real architecture. Bring a diagram and the decision that's keeping you up at night.

Next session

Each session we take one real architecture from an attendee and review it live, focused on risk: the decisions that are expensive to reverse, where it breaks under load, and what the next likely requirement will cost. Come with a diagram — even a rough one — and a specific question.

What we dig into

  • Cloud
  • SaaS
  • Payments
  • Scaling
  • Multi-Tenancy

How it works

  1. Bring a design

    A diagram and the decision keeping you up at night — even a rough sketch works.

  2. Register on Luma

    Grab a spot for the next session; Luma sends a confirmation and reminders.

  3. Add it to your calendar

    The session drops straight into your calendar with the join link.

  4. Attend live

    We review one real architecture together, focused on risk and trade-offs.

Register

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Register on Luma

Justin Coulston

Diagram-native architecture writing — systems, trade-offs, and the diagrams that explain them.

© 2026 Justin Coulston. Built as a static, diagram-native publication.