# TD-T03: Release and readiness

Adrian Sutherland · Version 1.0 · Refreshed September 2026

© 2005–2026 Adrian Sutherland.
Source page: https://architectureportal.org/assets/technology-deployment

Fictional cancellation service. Proposed design; checks are unrun.

## Process areas

A Simple Architectural Framework (ASAF) describes four continuing areas of work.

Proposed mapping for this fictional change. A review can cover several areas;
accepted decisions remain in place unless a finding reopens them.

| ASAF process area | Work in this example | Information to retain |
|---|---|---|
| Visioning | Agree service needs, workload and intended platform qualities; compare arrangements. | Requirements, assumptions, alternatives and responsibilities. |
| Transforming | Provision environments, apply reviewed configuration and check release readiness. | Package and configuration versions, checks and transition plans. |
| Operating | Run and support the environment, observe cost and capacity, and exercise recovery. | Measurements, incidents, configuration history and improvement proposals. |
| Governing | Agree platform policies, change authority, service acceptance and exceptions. | Accepted requirements, policy decisions, exceptions and review triggers. |

## Change and identity

TD-C1 (Release and compatibility) proposes one reviewed release record. Actual package/runtime/schema/configuration identities remain open; record relevant prompt/model versions too.

## Compatibility and migration

Preserve pending offers and retained receipts. Test supported older clients. Additive migration may enable staging; removal/reinterpretation requires a specific migration plan. SW-C1 (Summary workflow contract) applies to summary changes.

## Checks and exposure

TD-V1 (Environment checks) proposes checks of transaction, restart and restore behaviour under representative load. Start with agreed limited exposure; observe acceptance failures, unknown results and pending-work age. The thresholds, observation period and decision owner remain open.

## Failure and recovery

Stop widening when checks fail. Reverting code does not reverse accepted transfers, external actions or deleted data. Choose a tested rollback, forward repair or pause with reconciliation.

## Support and transition

Assign operational owners, grant required access, rehearse restore and retain diagnostic context without case content. Plan client transition and removal of old configuration after compatibility is established.

## Actual results

This remains a proposed design. None of the TD-V1 checks has run, and no release is approved.