36 lines
947 B
Markdown
36 lines
947 B
Markdown
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# ADR-010: Backward Compatibility for Authentication, Payment, and Authorization
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Status: Accepted
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Date: 2026-07-03
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## Context
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Authentication and payment flows are proven and contract-sensitive. Platform refactoring must not break existing integrations.
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## Decision
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Freeze behavior and contracts for:
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- Authentication flow.
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- Payment API interactions.
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- Authorization logic.
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Allow only encapsulation and integration-layer isolation, not contract redesign.
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## Consequences
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Positive:
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- Prevents regressions in critical commerce and access flows.
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- Enables architecture modernization around stable core behavior.
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Negative:
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- Some suboptimal legacy internals may remain until controlled replacement strategy is approved.
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## Compliance Requirements
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- Existing auth/payment request/response contracts remain unchanged.
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- Behavior-equivalent wrappers/adapters are allowed.
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- Any change requires explicit ADR and compatibility test evidence.
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