Software Migration Services for SaaS

Software migration services move an application, its data and its infrastructure from one technology stack, platform or database to another while the business keeps running. The work covers assessing the current system, recovering how it behaves, building the target, moving the data, proving the two match and cutting over safely. For a SaaS company, it also means moving customers without breaking their service agreements.

No. A rewrite replaces everything at once and freezes your roadmap while it runs. A migration moves the system in stages, with the old and new stacks running side by side until the new one is proven. Most SaaS platforms can migrate one module or one group of tenants at a time, so product work continues throughout.

It depends on the size of the codebase, the number of integrations, the amount of data and how many tenants you serve. Because the work is staged, the first migrated module or tenant group usually reaches production well before the full program finishes. We agree the sequence and the first milestone during the assessment, before any code changes.

Cost follows the scope of the codebase, the size and shape of the data, the number of integrations, the target stack and the level of testing you need. We scope it against your actual system first, so you see a number before work begins. For a rough range, try our Cost Calculator.

In most cases, yes. We run the new system alongside the old one, replicate data between them, verify that outputs match and move tenants in small groups with a rollback ready for each. Where a short maintenance window cannot be avoided, we plan it with you and schedule it for your lowest-traffic period.

We first recover the application's behavior and add tests around it. Then we move it to a supported PHP version or to a framework such as Laravel or Symfony, one module at a time, with the old code serving traffic until each new module is proven. This is how PHP migration services avoid a risky rewrite.

We scan the code and its dependencies for the changes that break between releases, upgrade the build and libraries in steps, and run the full test suite at each step. Where the application is a monolith, we can also separate services during the same program. Java migration services work best when upgrade and restructuring are planned together.

We assess which libraries and Windows-specific features need replacing, then port the application to current .NET in stages, using compatibility layers where they help. Services and data are verified against the old system at each stage. A .NET Framework to .NET migration is usually delivered module by module, not as a single cutover.

Yes. For COBOL, we recover the business rules from the code with AI assistance, document them, then move the logic to a modern language such as Java or .NET and verify the results against the original. For Python 2, we convert and test the code against Python 3 and replace libraries that no longer have a supported release.

Migration moves a system from one stack, platform or database to another. Application modernization improves how a system is built and runs, through upgrades, re-architecture and rebuilds. Many programs need both. We scope the migration first, then link it to our application modernization services where the system also needs restructuring.