---
title: "Legacy-to-Cloud Migration - Snowpack Data"
description: "Move on-prem DW to modern cloud with zero downtime"
url: https://snowpack-data.com/services/legacy-cloud-migration
---

Legacy-to-Cloud Migration

# Move on-prem DW to modern cloud with zero downtime

Migrate legacy on-premise data warehouses to Snowflake, BigQuery, or Redshift without disrupting operations. Zero downtime, full data validation, and optimized for 30-50% cost savings from day one.

Legacy on-premise data warehouses lock you into expensive hardware refresh cycles and limit analytics agility. We build migration paths that move your data to modern cloud warehouses incrementally—maintaining business continuity while modernizing architecture, optimizing queries, and reducing costs by 30-50%.

[Contact Us](https://snowpack-data.com/contact?service=legacy-cloud-migration) [See features](https://snowpack-data.com/services/legacy-cloud-migration#features)

## Migration approach

Zero-downtime cloud migration

### Incremental Migration

Migrate tables and pipelines incrementally with dual-write strategies to maintain business continuity

### Data Validation

Automated row counts, schema validation, and data quality checks ensure 100% accuracy post-migration

### Query Optimization

Rewrite legacy SQL for cloud warehouses, optimizing partitioning and clustering for 30-50% cost savings

## Ideal For

Modernize without disruption

### Enterprise

Migrate Oracle, Teradata, or SQL Server data warehouses to Snowflake or BigQuery without downtime

### Finance Teams

Reduce infrastructure costs by 30-50% by moving off expensive on-premise hardware refresh cycles

### Engineering Teams

Unlock modern analytics capabilities (JSON, ML, elastic compute) without rewriting entire data pipelines

## Ready to modernize your data warehouse?

Stop paying for expensive on-premise hardware. Migrate to cloud with zero downtime and 30-50% cost savings.

[Contact](https://snowpack-data.com/contact?service=legacy-cloud-migration) [Explore all our capabilities](https://snowpack-data.com/services/capabilities)