Data Migration Testing

Data Migration Testing is a software testing process that involves the transfer of data from one system to another, to ensure that the data is accurately transferred, properly formatted, and functioning as intended within the new system.

Data Migration Testing Services to Ensure Integrity & Accuracy

Migrate your data with confidence. At CelticQA, our data migration testing services ensure your data is transferred accurately, securely, and without loss or corruption — while maintaining full application functionality. 

Customer focused
Value oriented
Quality obsessed
People centric

Why Data Migration Testing Matters

Whether you’re upgrading platforms, consolidating databases, or transitioning to the cloud, data migration carries serious risks: 

  • Data loss or duplication 
  • Corrupted or mismatched data 
  • Application errors or performance degradation 
  • Costly downtime or compliance failures 

 

Our QA experts design and execute comprehensive ETL (Extract, Transform, Load) testing strategies to safeguard every byte of your mission-critical data. 

vector image of a person checking data on a computer with a test checklist
data migration showing on computer screens and phone

Proven Data Migration Testing Process

We take a structured approach to minimize risk and ensure data fidelity during every migration phase:

  • Define scope and migration goals 
  • Validate source and target schemas 
  • Map legacy data to the new structure 
  • Establish acceptance criteria and data quality thresholds 

 

Data Comparison Testing 

We validate data across source and target systems at the database level using SQL queries, ensuring: 

  • No data loss 
  • Accurate field mapping 
  • Elimination of duplicates or mismatches 

 

🖥 UI Verification 

We simulate user-facing views in the target system to validate how migrated data is displayed in real-world use cases. 

Data Validation Scripts 

Automated SQL scripts test data quality, precision, and accuracy in development phases—catching issues early. 

Application Validation 

Ensure migrated data doesn’t disrupt your app. We test app behavior and performance post-migration across all environments. 

 

When Do You Need Data Migration Testing?

  • Moving from a legacy system to a modern platform 
  • Consolidating or restructuring databases 
  • Migrating applications to cloud infrastructure 
  • Post-upgrade testing for CRM, ERP, or EHR systems 
  • Data warehousing, MDM, and ETL process validation 
vector image of a person in a laptop the background has elements of data migration
team reviewing data migration

Benefits of Outsourcing Data Migration QA

By partnering with CelticQA for data migration testing, you gain: 

  • Reduced risk of data loss and business disruption
  • Cost-effective migration with expert QA oversight
  • Automated testing to accelerate go-live readiness
  • Confidence in data quality, compliance, and performance
  • Reclaimed focus for your internal team 

Our Data Migration Testing Services Include

  • ETL Testing across all stages (Extract, Transform, Load) 
  • Schema validation & data mapping verification 
  • Data reconciliation between legacy and target systems 
  • Automated test suite development (Ranorex & custom scripts) 
  • Functional and performance validation post-migration 
  • Detailed QA reporting and defect tracking 
vector image of data migration checklist

Why CelticQA?

Independent Verification & Validation (IV&V)

Objective oversight ensures data accuracy, integrity, and completeness throughout the migration lifecycle.

Automated Data Validation

everages automation to streamline large-volume data comparisons between legacy and target systems.

Global Delivery Model

Blended U.S., Ireland, and India team coverage ensures around-the-clock progress and cost efficiency.

Expertise in Regulated Environments

Proven experience supporting migrations for healthcare, financial services, and other compliance-driven industries.

Accelerated UAT and Regression Testing

Purpose-built automation frameworks and reusable test assets reduce cycle time and enable faster business

Proven Delivery Record

20+ years of successfully delivering complex QA engagements on time, on budget, with high client satisfaction.

Comprehensive Risk-Based QA Approach

Focuses QA efforts on high-risk data elements, interfaces, and business-critical workflows to mitigate downstream issues.
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QAConnector Platform Advantage

Enables real-time visibility across test planning, execution, and defect resolution—improving collaboration between business and technical teams.

We help your digital transformation succeed—without data loss, delays, or system crashes.

Our Automation Tool Capabilities

Our Locations
Markets We Serve

USA

Experience quality assurance with our expert QA Testing Services in the USA.

UK

Elevate your software quality with our tailored Software QA Testing Services in the UK.

Ireland

Quality assurance for your software made easy with our experienced Software QA & Testing Services in Ireland.

Brands That Trust Us

Our Key Clients

Ready to Migrate Without the Mayhem?

At CelticQA Solutions, we value every partnership. Whatever your software QA or testing needs are, we encourage you to reach out and schedule a call with us.

Let's discuss your Data Migration Testing Needs
Schedule A Call
Let's Talk

Atlanta, USA
+1-866-343-5250

Dundalk, Ireland
+353 42 934 3200

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office hours

Atlanta, USA
MON – FRI: 9 AM to 5 PM

Dundalk, Ireland
MON – FRI: 9 AM to 5 PM