Data Migration

Data Migration Services for Safer System Transitions

Plan, transform, validate and migrate business data between systems with a structured approach designed to reduce disruption and improve confidence in the transition.

We don't promise zero downtime or zero risk — a good migration plan is about managing and reducing that risk deliberately.

What it actually means

What Is Data Migration?

Data Migration is the process of moving data from a source system or environment to a target system or environment while preserving accuracy, usability and required relationships between records.

When it comes up

Common Migration Scenarios

Legacy System → Modern PlatformOn-Premise → Cloud One Database → AnotherERP MigrationCRM Migration eCommerce Platform MigrationApplication ReplacementDatabase Consolidation
Process

Migration Process

01

Discovery

Understand the systems, data and business constraints involved.

02

Source Assessment

Assess what's actually in the source system.

03

Data Profiling

Understand the shape, quality and quirks of the real data.

04

Mapping

Define how source fields map to the target system.

05

Transformation

Convert data into the format the target system needs.

06

Cleansing

Fix duplicates, invalid values and inconsistent formats along the way.

07

Test Migration

Run it against a non-production copy first.

08

Validation

Check the test results before touching production data.

09

Cutover Planning

Plan exactly how and when the switch happens.

10

Production Migration

Execute the real migration.

11

Reconciliation

Confirm what moved matches what should have moved.

12

Post-Migration Verification

Check the target system actually works as expected with real use.

Getting the fields right

Data Mapping

Mapping defines exactly how each source field, record type and relationship corresponds to its place in the target system — get this wrong and the migration looks successful right up until someone notices the data doesn't mean what it should.

Shaping the data

Data Transformation

Format ChangesField MappingNormalization StandardizationBusiness Rules
Cleaning as you go

Data Cleansing

DuplicatesInvalid ValuesMissing InformationInconsistent Formats
The most important check

Validation & Reconciliation

This is where confidence in a migration is actually earned. We check:

Record CountsTotalsKey Fields RelationshipsBusiness RulesSample Records
Approach

Migration Strategies

Big Bang

Everything migrates in a single, defined window.

Phased Migration

Data or modules move in stages over time.

Parallel Migration

Old and new systems run side by side for a period.

The right strategy depends on system complexity, risk tolerance, downtime requirements and business constraints — not a default preference for one approach.

An honest note

Migration Risks

Worth naming directly rather than glossing over:

Incomplete MappingPoor Source DataUnexpected Formats DependenciesDowntimeData Loss Duplicate RecordsIntegration Failures

These risks are addressed through planning, testing, backups and validation — not eliminated outright. Anyone promising a zero-risk migration isn't being straight with you.

Where it connects

Data Migration + Data Management

Migration and Data Management are closely linked — a migration is a good forcing function to fix data quality issues, and existing governance work makes source data assessment faster.

Under the hood

Technology

SQLPythonETL / ELTAPIs DatabasesCloud PlatformsScriptingValidation Tools
Trust & responsibility

Security

Data in transit during a migration needs the same care as data at rest — secure handling, limited access during the process, and no compliance guarantees we can't back up.

When it's time

When Data Migration Is Needed

Replacing Legacy SoftwareConsolidating Systems Moving to CloudChanging CRM / ERPRestructuring Data Architecture
Fit

Who Can Benefit?

SMEsGrowing BusinessesOrganizations Replacing Legacy Systems Companies Moving to the CloudBusinesses Consolidating After a Merger
Why InfoSkull

Why InfoSkull?

Structured Process

A defined path from discovery through to post-migration verification.

Validation-First Mindset

We treat reconciliation as essential, not optional.

Honest About Risk

We'll tell you what could go wrong and how we're mitigating it.

Data + Software Capability

We can also help with the systems on either end of the migration.

Comparison

Data Migration vs Related Data Services

ServicePrimary QuestionTypical Output
Data MigrationHow do we move data safely between systems?Migrated, validated datasets
Data ManagementIs our data organized, governed and reliable?Cleaner data, governance processes
Data AnalyticsWhat happened, and why?Dashboards, reports, KPI analysis
Data ScienceWhat might happen? What could we test?Forecasts, models, experiments
FAQ

Common Questions

Moving data from a source system to a target system while preserving accuracy, usability and required relationships.

No — we won't promise zero downtime or zero risk. A good plan manages and reduces that risk deliberately, using testing and validation.

That's common — cleansing is typically part of the migration process itself, and sometimes a broader Data Management pass helps too.

Through validation and reconciliation — checking record counts, totals, key fields and relationships against the source before and after migration.

Yes — CRM and ERP migrations are common scenarios, each with their own mapping and validation considerations.

It depends on system complexity, downtime tolerance and risk — Big Bang, phased and parallel approaches each fit different situations.

Yes — on-premise to cloud is one of the more common migration scenarios we work with.

Backups are a standard part of a responsible migration plan, alongside testing on non-production copies first.

It depends heavily on data volume, complexity and the number of systems involved — we'll give a realistic estimate after the discovery phase.

Get in touch and tell us what you're migrating from and to — we'll start with discovery and source assessment.

Let's talk

Planning a System Change That Involves Moving Data?

Tell us what you're migrating from and to — we'll help you plan an approach that protects accuracy and reduces disruption.