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<p>Live multi-tenant platform migrations create integrity and audit risks because legacy systems, the migration process, and the target platform mutate state concurrently. Yet migration is often treated as a&#xa0;one-off data move rather than a&#xa0;repeatable process with explicit integrity gates. Based on a&#xa0;case with three tenants, this paper develops Integrity by Design: tenant-specific logic is encapsulated via the Strategy Pattern, while orchestration, metadata, audit trails, and rollback centrally enforce integrity. Migration state is persisted in a&#xa0;lakehouse, including old-to-new primary key mappings. A&#xa0;global assertion over monetary states acts as a&#xa0;per-batch release gate. The paper specifies a&#xa0;reference architecture for the MigrationService that couples transformation and orchestration through Design by Contract and operationalizes integrity as a&#xa0;design principle. It further articulates governance as the coupling of control objectives, technical mechanisms, and a&#xa0;staged rollout.</p>

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Integrity by Design – Data-Engineering und Governance einer Drei-Mandanten-Migration auf eine Multi-Tenant-Plattform

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月28日

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  • Andreas Paech

摘要

Live multi-tenant platform migrations create integrity and audit risks because legacy systems, the migration process, and the target platform mutate state concurrently. Yet migration is often treated as a one-off data move rather than a repeatable process with explicit integrity gates. Based on a case with three tenants, this paper develops Integrity by Design: tenant-specific logic is encapsulated via the Strategy Pattern, while orchestration, metadata, audit trails, and rollback centrally enforce integrity. Migration state is persisted in a lakehouse, including old-to-new primary key mappings. A global assertion over monetary states acts as a per-batch release gate. The paper specifies a reference architecture for the MigrationService that couples transformation and orchestration through Design by Contract and operationalizes integrity as a design principle. It further articulates governance as the coupling of control objectives, technical mechanisms, and a staged rollout.