Discovery and dependency map
Servers, databases, jobs and integrations catalogued.
Legacy to Cloud App
Modernise on-premise software without a big-bang rewrite.
ERPHUBs moves legacy desktop and on-premise applications to cloud architectures using rehost, replatform or refactor strategies chosen by risk, cost and business value.
Legacy to Cloud AppDesigned and delivered by ERPHUBs
Why It Matters
Why Legacy to Cloud App Needs a Specialist Approach
Legacy applications on old servers are costly to maintain, hard to secure and slow to change. Cloud migration restores agility, but only if dependencies, data and performance are understood first. We plan, rehost or refactor, and cut over with a rollback path.
ERPHUBs moves legacy desktop and on-premise applications to cloud architectures using rehost, replatform or refactor strategies chosen by risk, cost and business value.
Discuss your project0data loss targetReconciled at record level
Minutestypical cut-over downtimeWith replication and rehearsals
100%feature parity checkedRegression tests against the old app
Rollbackalways readyTested before the switch
What You Get
What Is Included in Legacy to Cloud App
Each deliverable is scoped, reviewed with you and handed over with documentation.
6R strategy per app
Rehost, replatform, refactor or retire, chosen by value and risk.
Landing zone and security
Accounts, networks, identity and encryption ready before moves.
Data migration and sync
Bulk plus continuous replication to minimise downtime.
Performance and cost tuning
Right-sizing and budgets after cut-over.
Decommissioning
Safe shutdown and archiving of the old environment.
Bottlenecks and Fixes
Where Legacy to Cloud App Projects Get Stuck, and How We Design Around It
Ageing infrastructure
The bottleneck. Servers and licences are costly and risky.
How we design it. Cloud hosting with managed services and backups.
Target result: 0 data loss target
Unmaintainable code
The bottleneck. Nobody understands the old system.
How we design it. Incremental refactoring behind stable APIs.
Target result: Minutes typical cut-over downtime
Remote access issues
The bottleneck. Staff cannot work off-site.
How we design it. Web-based access with SSO and MFA.
Target result: 100% feature parity checked
By Industry
Legacy to Cloud App: Bottlenecks We Solve, Industry by Industry
Every sector hits different walls. Here is what we see and how we design around it.
Manufacturing
Bottleneck: Plant software runs on old servers.
Our design: Hybrid design keeping shop-floor connectivity.
Finance
Bottleneck: Compliance blocks big changes.
Our design: Phased moves with audit evidence.
Education
Bottleneck: Campus systems are on-premise.
Our design: Cloud portals while core systems migrate.
Distribution
Bottleneck: Branches share a central server.
Our design: Cloud ERP access across locations.
Migration Risk Control
Migration Risks and How We Remove Them
Migrations fail in predictable ways. We plan for each one before the first record moves.
Data loss or corruption
The risk. Records are altered or dropped during transfer.
Our safeguard. Checksums, record counts and sampled comparisons at every trial load.
Extended downtime
The risk. Users locked out during the switch.
Our safeguard. Continuous replication and a rehearsed, time-boxed cut-over.
Feature regressions
The risk. Behaviour differs from the old app.
Our safeguard. Automated regression suite and side-by-side user acceptance tests.
Lost reviews and users
The risk. Store changes reset ratings or break updates.
Our safeguard. Same bundle IDs, transfer-safe processes and staged rollouts.
Security gaps
The risk. New environment is configured loosely.
Our safeguard. Hardened landing zone, secrets management and access reviews.
Cost overruns
The risk. Cloud or licence costs exceed forecasts.
Our safeguard. Right-sizing, budgets and alerts from the first week.
Sign-off Checklist
How We Prove the Legacy to Cloud App Worked
Nothing goes live on trust. Each item below is checked, recorded and signed off with you before cut-over.
- Record counts match between source and target for every table
- Checksums and sampled records compared for critical entities
- All integrations and webhooks re-tested end to end
- User accounts, roles and permissions verified
- Performance matches or beats the old system under load
- Backup and restore tested on the new environment
How We Deliver
A Five-Step Delivery Path
- 1AssessInventory of code, data, dependencies and users.
- 2PlanTarget architecture, mapping and rollback plan.
- 3MigrateStaged moves with automated checks.
- 4ValidateReconciliation and parallel run.
- 5Cut overSwitch, monitor and retire the old system.
Typical stackAWSAzureDockerCI/CDTerraform
Standards We Build To
Quality, Security and Compliance in Legacy to Cloud App
Record-level reconciliation
Counts, checksums and samples compared between old and new.
Rehearsed cut-over
At least one full dress rehearsal before go-live.
Security and compliance
Encrypted transfer, access control and audit logs.
User continuity
Accounts, sessions and settings carried across.
Planning
What Affects Timeline and Cost in Legacy to Cloud App
Typically 4 to 16 weeks depending on size, data volume and downtime limits.
Size and age of the system
Older, larger systems need deeper discovery.
Data volume
Large datasets need staged or replicated loads.
Downtime tolerance
Zero-downtime plans add engineering effort.
Third-party dependencies
Every library and integration must be replaced or re-tested.
Engagement Models
Ways to Work With ERPHUBs
Fixed-scope project
A clear scope, timeline and price for well-defined work.
Dedicated team
A named squad that works as part of your team month to month.
Support retainer
Ongoing fixes, updates and monitoring after launch.
Use Cases
Where Legacy to Cloud App Delivers the Most Value
Typical situations where clients bring us in, and what we design for each.
On-premise ERP and desktop software
Move to cloud with a lift, refactor or rebuild plan chosen per module.
Remote access
Let branches, field staff and partners use the system securely from anywhere.
Backups and recovery
Replace tape and ad-hoc copies with tested restore and disaster plans.
Cost control
Right-size cloud spend with monitoring and budgets from day one.
Tools and Technology
How We Build Legacy to Cloud App
Assessment tooling
Code, data and dependency scans that size the work before quoting.
Data migration
Scripted extraction, mapping and validation with repeatable dry runs.
Parallel testing
Old and new systems tested against the same cases and datasets.
Cut-over controls
Freeze windows, rollback plans and live monitoring on go-live day.
Success Metrics
How We Measure Legacy to Cloud App Results
We agree measurable targets up front and report against them.
Data reconciliation
Record counts and balances matched between old and new systems.
Downtime
Planned cut-over windows measured in minutes where possible.
Defects after go-live
Open critical issues at day 7 and day 30.
User adoption
Logins and task completion compared with the old system.
Before You Decide
Questions to Settle Before Starting Legacy to Cloud App
Will users lose data or access?
Dry runs and reconciliation reports prove nothing is lost before cut-over.
How long will we be offline?
We plan the shortest safe window and rehearse it.
What if something goes wrong?
A tested rollback path is part of every migration plan.
Do you handle store and account details?
Yes, including bundle IDs, certificates and compliance forms.
After Launch
Support, Maintenance and Handover
Monitoring and fixes
Uptime, errors and performance watched, with fixes under agreed response times.
Updates and security
Dependencies, platforms and security patches kept current.
Enhancements
A monthly pool of hours for improvements, prioritised with you.
Training and handover
Documentation, recordings and sessions so your team stays independent.
Works With Zoho
Connected to the Zoho Apps You Already Use
Zoho
Connected by ERPHUBs, a Zoho Authorized Partner.
See howMore in App Migration
Related App Migration Services
FAQ
Legacy to Cloud App, Answered
Do you migrate to AWS, Azure or Google Cloud?
Yes, plus managed hosting where suitable.
Will there be downtime?
We plan rehearsed cutovers with rollback and minimal downtime.
Can we replace instead with Zoho?
Often yes; we compare rebuild, replace and migrate options.
How much does Legacy to Cloud App cost?
Cost depends on scope, integrations, compliance needs and the number of users or pages. After a short discovery we give a fixed or phased quote with clear milestones, so you can compare it with other options.
How long does Legacy to Cloud App take?
Typically 4 to 16 weeks depending on size, data volume and downtime limits.
What support do you provide after Legacy to Cloud App goes live?
We offer support retainers covering fixes, updates, monitoring and enhancements, plus a handover with documentation and training so your team is never locked in.
Start the conversation
Tell us about your Legacy to Cloud App project
Share your goal and constraints. A senior consultant replies with questions, options and a scoped quote.
Europe
Legacy to Cloud App: what Europe teams should plan for
Moving to Zoho from another system in Europe means mapping tax codes, currency and opening balances correctly the first time, then switching over between filing deadlines.
Cutover timed to your calendar
We avoid the busy filing windows: Monthly or quarterly: National VAT returns and EC Sales Lists; Annually: Intrastat review where applicable.
VAT code mapping
Existing tax codes are matched to VAT (17%-27% depending on member state standard) in the Zoho Books (EU editions, VAT).
Where your data lives
Your Zoho account is created on the EU data centre (zoho.eu).
Moves we see most here
Typical sources in Europe: Xero, Sage, Exact, Spreadsheets.
Yes. The Europe team configures it with the Zoho Books (EU editions, VAT), EUR and VAT, and supports it Mon-Fri 09:00-18:00 CET.
Zoho accounts for Europe use the EU data centre (zoho.eu). We confirm the data centre with you before any migration or integration starts.