A technology choice is easier to defend when it answers a defined requirement. Start with what the organization must accomplish, who owns each decision, and how the work is performed today. A language or database comparison cannot resolve an unclear approval process.
Describe one complete business journey
For an illustrative purchasing workflow, follow a request from submission through approval, ordering, receipt and reporting. Identify who may act at each stage, what evidence they need and which changes must remain traceable. A useful first artifact is a short workflow description with named responsibilities.
Turn expectations into scenarios
“The system must be fast” leaves too much room for interpretation. Instead, write a testable scenario: which action, under what expected workload, within which response target? Do the same for recovery, access restrictions and reporting freshness. Agree the target with the people who will operate the service.
Record assumptions as assumptions. A proposed volume is not a measured production workload. Identify the evidence needed to revise it.
Map boundaries and ownership
List the systems involved, the information exchanged and the owner of each source. For every integration, ask what happens when the other service is unavailable, who investigates failures and how duplicate requests are handled. A simple boundary diagram often exposes questions a component list hides.
Compare options against constraints
Consider maintainability, team experience, hosting requirements, operating cost and the ability to test and recover. A small team may prefer fewer moving parts. A constrained hosting environment may change the deployment approach. Document why an option fits and what would trigger reconsideration.
AWS’s architecture guidance advocates testing assumptions and evolving designs using evidence. The practical exercise here is to record the decision, its assumptions and the next review point—even when the deployment is outside AWS.
A useful starting brief
- One business journey and its responsible owner.
- A list of users, permissions and external dependencies.
- Measurable operating and recovery expectations.
- Constraints and unresolved questions.
- A short comparison of feasible options.
This is a starting point for design, not a complete architecture assessment. Use it to make the next technical conversation specific.