Architecture-first development means resolving important system decisions before they become expensive assumptions in code. It does not mean specifying every detail in advance. The aim is to identify the constraints, dependencies, and failure paths that could change the design.
The checklist below is a MyNew Technologies planning aid. It is not evidence that architecture alone prevents project failure, and it does not replace implementation testing or an agreed delivery scope.
Begin with the business transaction
Describe one complete piece of work: who starts it, which information it requires, which systems participate, and what counts as completion. Include the person who handles exceptions. A diagram of software components is incomplete if it leaves out the actual handoff between people.
Consider an illustrative order integration. The customer submits an order, commerce validates it, an ERP accepts it, inventory is reserved, and the customer receives a status. Each transition can fail. The design needs to distinguish “received,” “accepted,” and “fulfilled” rather than treating them as the same state.
Write down ownership and boundaries
| Decision | Question to resolve |
|---|---|
| Source of truth | Which system owns customers, prices, orders, and inventory? |
| Interfaces | Which APIs, file formats, authentication methods, and limits apply? |
| Permissions | Who may read, approve, change, and export each record? |
| Operations | Who notices a failure and owns the recovery? |
| Exit | Can data and operating knowledge be transferred if a supplier changes? |
Make failure behavior part of the design
Decide what happens when a dependency is slow or unavailable. Set timeouts, retry limits, duplicate protection, and an exception queue. A retry must not create another order or charge. Where automatic recovery is unsafe, preserve enough context for a person to resolve the issue.
For important data, agree on acceptable loss and recovery time with the business owner. Then test a restoration. Having a backup file is different from showing that the application can run from it.
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Request Technical ConsultationValidate the risky assumption early
Choose a small technical experiment that could change the project direction. It might confirm that a vendor API supports the required update, that a legacy export contains stable identifiers, or that a representative workload fits the proposed infrastructure.
Write the expected result and the rejection condition before testing. Keep the test isolated from real customer actions. Document what it established and what remains unknown; a successful sample does not prove production capacity.
Turn the design into acceptance criteria
- A named owner approves the workflow and data mapping.
- Normal, duplicate, delayed, invalid, and failed requests have defined outcomes.
- Deployment, monitoring, restoration, and rollback procedures are usable by the operating team.
- Access and secrets are separated from application content and test records.
- The handover includes dependencies, recurring costs, and unresolved limitations.
The AWS Well-Architected Framework is a useful reference for structured conversations about architectural tradeoffs. Our checklist is independent of AWS certification or partner status.
Explore MyNew Technologies architecture and development services, or discuss the highest-risk assumption in your project. A useful first deliverable is a clear decision record, not a larger list of technologies.
