SaaS Modernization and Legacy Migration
Move a slow, fragile or inherited system onto something your team can change, in stages.
When every change takes longer than the last.
BitsSolved is a software studio in Tamil Nadu, India that modernizes slow or fragile SaaS products and migrates legacy software to a maintainable stack in stages, with the data migrated and tested before each cutover. Systems slow down the same ways: a database nobody dares touch, deploys that need a ritual, code inherited from a previous team. A rewrite from zero is rarely the answer. Moving in stages usually is.
Signs it is time
- Recurring production incidents, slow pages or slow APIs
- Deploys that are risky, manual or done by one person
- A database that has become the bottleneck
- Code inherited from a previous developer or agency
- A platform, framework or server that is out of support
- Infrastructure costs that keep rising
What the engagement includes.
An assessment first
What the system does today, what is fragile, and the order of work that removes the most risk first.
A staged plan
Small steps that each leave a working system, instead of one big switch-over.
Data migration with checks
Scripts that move the data, with counts and spot checks that prove it arrived intact, rehearsed first.
Cutover with a rollback
Each switch rehearsed on staging, with a tested way back.
Monitoring and documentation
Alerts, backups and written notes your team can follow after the move.
- Old framework versions to supported ones
- A tangled codebase to clear modules
- Hand-run servers to push-to-deploy pipelines
- Spreadsheets and desktop tools to a web application
- An old database schema to a cleaner one, with the data
- On-premise servers to the cloud
- An oversized cloud setup to right-sized servers
- Missing monitoring and backups to tested ones
- 01
Assess
Read the code, the infrastructure and the incident history. Map what breaks first.
- 02
Plan
Stages, each with its own written scope and fixed quote.
- 03
Migrate in stages
Each stage tested and rehearsed before it touches production.
- 04
Hand over
Documentation and monitoring for your team, or ongoing maintenance with us.
SaaS that outgrew its first version
The product works and sells, and the code underneath is slowing every release.
Businesses on an old internal system
It runs the business, but it is hard to change, hard to host or out of support.
Owners of inherited code
You took over a product from a developer or agency who is no longer around.
The first call is free and is mostly us asking questions.
We can plan and review while your team does the work, do the work ourselves, or split it.
A migration path designed in, not bolted on.
KeyNesta replaces other authenticator apps, so moving existing data across had to be part of the product from the start. The same applies to any system that replaces another.
- Sector
- Security and identity software
- Platforms
- Web, native iOS, native Android
- Model
- Encrypted on the device before sync
- Scope
- Product, platform apps and backend

One tap import
Existing codes come across from Google Authenticator in a single import, rather than being re-enrolled one account at a time, which is the reason most people never move.
Plan the migration in
A security product that cannot import from the one it replaces does not get adopted, however much better it is.
Tell us what slows you down.
The first call is free and is mostly us asking questions. After it you get the scope in writing and a fixed quote for the first phase.
What happens next
- You send the formTell us the problem.
- We reply by emailWith any questions.
- A free first callThen the scope in writing.