Snowflake Centric Data Migration

At LEIT DATA, we specialise in modernising data platforms by guiding organisations through seamless, secure, and intelligent data migrations—with a core focus on Snowflake. Whether you’re migrating from legacy on-prem systems or modernising across clouds, our approach ensures your transition drives real business value.

Why Migrate to Snowflake with LEIT?

Data is at the heart of every business. But legacy data environments limit agility, scale, and insight. Our migration services help clients:

Unlock the performance and cost benefits of Snowflake
Consolidate fragmented data estates
Ensure governed, secure, and high-quality data transfer
Enable analytics, AI, and self-service BI from Day One

We support all migration types—on-prem to cloud, cloud-to-cloud, or hybrid—with a laser focus on performance, security, and business outcomes.

We specialize in migrating from:

Teradata – Shift from rigid MPP architecture to elastic compute and simplified operations on Snowflake
Amazon Redshift – Transition to scalable, cost-efficient Snowflake performance with workload optimisation
Cloudera/Hadoop – Modernise away from legacy HDFS and HiveQL to governed, real-time cloud analytics
Oracle – Migrate from complex PL/SQL-based systems to modern SQL workflows and Snowflake-native features
Microsoft SQL Server – Simplify and scale beyond OLAP cubes and legacy reporting tools with Snowflake-native compute

Blueprint-Aligned Migration Methodology

Each migration aligns with our LEIT Platform Blueprint, structured around modular, value-driven platform components:

1. Assessment & Strategy

We assess your current environment—data sources, models, risks, and business goals. This defines a blueprint-aligned roadmap tailored to your platform and people.

2. Data Preparation & Cleansing

We identify redundant, obsolete, and trivial (ROT) data, enforce naming standards, normalise schemas, and pre-validate data before transfer.

3. Ingestion & Replication

Whether it’s CDC from SQL Server, flat-file exports from Hadoop, or Oracle data pump migrations—we ensure fast, accurate ingestion using tools like Fivetran, Airbyte, ADF, and bespoke loaders.

4. Migration Execution

We implement a Bronze-Silver-Gold medallion architecture on Snowflake to enable observability, traceability, and data trust throughout the pipeline.

5. Validation & Testing

Comprehensive validation checks, record-level comparisons, and log-based audits guarantee a trustworthy migration.

6. Optimisation & Handover

Our approach ensures a smooth operational transition by embedding FinOps and DataOps practices tailored to your Snowflake environment. Leveraging a comprehensive Pattern Catalog, we create detailed runbooks to maintain operational efficiency, transparency and control.

Proven Outcomes from Snowflake Migrations

We’ve delivered high-impact Snowflake migrations across industries:
A UK Energy Supplier migrated from legacy systems to Snowflake integrated  with Salesforce improving BI adoption and cutting time to insight by 50%.
A Global FinTech client transitioned from a complex legacy stack to Snowflake, reducing operational costs and enabling new data products.

A Music Licensing business replaced legacy SQL Server and Hadoop                pipelines with a Snowflake-based platform, increasing analytics throughput    and data quality.

Trusted, Compliant & Future-Ready

Our migrations prioritise:

End-to-end encryption & masking
Role- and attribute-based access controls
Metadata lineage and schema evolution tracking
GDPR, HIPAA, and industry-specific compliance

Ready to Migrate?

Let LEIT DATA help you unlock the full potential of Snowflake with a secure, scalable, and intelligent migration strategy.

Contact us today to start your journey.