Contracts that Withstand the Test of Time: Canonical Model and System Evolution in .NET
Nagib Sabbag Filho · Zenodo (CERN European Organization for Nuclear Research) · 2026
This article presents strategies for modeling, versioning, and evolving canonical contracts in .NET systems without breaking clients. It discusses the separation between contract and implementation, backward-compatible additive changes, contract testing, schema validation, and version coexistence, with examples in C# on .NET 10, to build durable integrations that are resilient to changing requirements.