Teradata to BigQuery Migration for Global Retailer
Retail
- 80%Cost Reduction
- 10xQuery Speed Improvement
- 10 weeksMigration Timeline
Challenge
A multinational retailer spent $2M annually maintaining aging Teradata infrastructure. Query performance was degrading, scaling was prohibitively expensive, and their data team couldn't support new real-time analytics requirements.
Solution
Migrated 50TB of data and 2,000+ SQL queries from Teradata to Google BigQuery in 10 weeks. Implemented automated ELT pipelines using dbt, established data governance framework, and trained internal team on cloud-native best practices.
Results
- Reduced infrastructure costs from $2M to $400K annually (80% reduction)
- Improved query performance by 10x for most common analytical workloads
- Enabled real-time inventory analytics that were previously impossible
- Zero downtime during cutover with seamless rollback capability
