Efficient Ops
Jan 19, 2020 · Operations
Why TSB’s $3 Billion Data Migration Failed: Testing, Risk, and Lessons Learned
The article examines the disastrous 2018 TSB bank data migration, detailing how rushed system replication, inadequate testing, and complex micro‑service architecture caused massive data loss, regulatory fallout, and costly remediation, while highlighting broader lessons for IT operations and resilience in financial services.
Data MigrationIT resiliencebanking
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