Move Past Legacy Risks with Proven SharePoint Migration Services

Maintaining legacy SharePoint infrastructure is no longer just a technical inconvenience—it is a direct risk to your operational security and regulatory compliance. Moving years of accumulated data, custom-built workflows, and complex permission structures requires a strategy that goes far beyond a basic software upgrade. As a trusted Microsoft Solutions Partner, Kellton delivers comprehensive SharePoint migration services designed to eliminate the guesswork, downtime, and hidden liabilities of moving to a modern environment. We don't just shift your files to the cloud; we restructure your digital workplace so it remains secure, fully compliant, and ready for future growth.

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Move Past Legacy Risks with Proven SharePoint Migration Services

Maintaining legacy SharePoint infrastructure is no longer just a technical inconvenience—it is a direct risk to your operational security and regulatory compliance. Moving years of accumulated data, custom-built workflows, and complex permission structures requires a strategy that goes far beyond a basic software upgrade. As a trusted Microsoft Solutions Partner, Kellton delivers comprehensive SharePoint migration services designed to eliminate the guesswork, downtime, and hidden liabilities of moving to a modern environment. We don't just shift your files to the cloud; we restructure your digital workplace so it remains secure, fully compliant, and ready for future growth.

SharePoint Migration Services Built Around What Actually Breaks

SharePoint Server 2016 and 2019 reached end of extended support on July 14, 2026. Microsoft has stopped issuing security patches, stopped fixing bugs, and stopped taking support calls for both versions — while affected environments keep running exactly as before, just with nobody watching for what breaks. For most compliance frameworks, that's no longer a disclosed risk. It's an active finding.

Most SharePoint migrations don't fail on migration day. They fail quietly, weeks later — a permission that never got remapped, a workflow that stopped triggering, a custom form nobody remembered depended on SharePoint Designer. Our SharePoint migration services surface all three before your migration day, not after.

We start with a fixed-scope discovery workshop, not an open-ended consulting engagement. Two to four days, on-site or remote, and you leave with a wave plan and a fixed-fee proposal — not a longer meeting booked to sell you another meeting.

50+TB

Migrated Across Engagements

99.9%

Average Content Fidelity

5-Stage

Proven Migration Methodology

SharePoint Migration Services We Offer

Kellton's expertise as a Microsoft Solutions Partner means we don't run a generic checklist against your environment. Every engagement starts with a fixed-scope discovery workshop scoped to your actual content, permissions, and custom solutions — delivered in 2–4 days, with deliverables in your hands within 5 business days of close.

Farm & Tenant Inventory
 Farm & Tenant Inventory

A complete audit of sites, site collections, content types, managed metadata, workflows, and custom solutions across your on-premises or source environment — so scope is defined by what's actually there, not what the org chart assumes is there.

Permissions & Access Audit
Permissions & Access Audit

We map unique permissions, broken inheritance, orphaned accounts, and group memberships. This is where most migrations quietly go wrong, so we surface the permissions debt before it becomes a production incident, not after go-live.


Custom Solutions Triage
Custom Solutions Triage

Every InfoPath form, SharePoint Designer workflow, Nintex process, custom web part, and third-party integration gets identified and scored for remediation or rebuild — mapped to a modern equivalent like Power Apps, Power Automate, or SPFx before migration day.

 

Governance Readiness
Governance Readiness

We assess sensitivity labeling, retention policies, DLP configuration, and eDiscovery posture against the Microsoft Purview baseline, so the environment you land in is one your compliance team can actually sign off on.

 

AI-Ready, Power Platform Modernization
AI-Ready, Power Platform Modernization

We don't just relocate your classic environment — we modernize what runs on top of it. InfoPath forms and SharePoint Designer workflows become Power Apps and Power Automate flows, and your environment lands governed and ready for Copilot and AI-powered search from day one.

 

Farm & Tenant Inventory Permissions & Access Audit Custom Solutions Triage Governance ReadinessAI-Ready, Power Platform Modernization 

Why Choose Kellton's Expertise for SharePoint Migration Services?

Choosing a SharePoint migration partner takes more than a tool license. At Kellton, we connect Microsoft platform depth with governance-first delivery. We don't just move your files — we deliver a target-state architecture your team can actually govern, with every custom solution mapped to a modern replacement before cutover, and a rollback plan validated before any wave goes live

Zero Data
Loss

We run reconciliation reports on file counts, metadata, permissions, and version history on every migration batch. We don't close a wave until everything matches — no exceptions.

Fixed Timeline

Every phase has a named delivery lead and a written exit criterion both sides sign off on. Slippage triggers an executive call, not a quietly rescheduled date.

Rollback on Every Cutover

A tested rollback plan is confirmed before any wave goes live. If reconciliation isn't clean, we restore. We don't improvise.

Near-Zero Downtime

Waves cut over site by site, not all at once. Your team keeps working in the current environment until each wave is validated and ready, so migration day doesn't mean a dark intranet.

 

Migration Approach

Governance-first migration

Governance-first migration

Zero data loss

Zero data loss

Fixed-fee engagement

Fixed-fee engagement

Custom code remediation

MySQL

Microsoft-aligned delivery

Microsoft-aligned delivery

Cross-industry expertise

Cross-industry expertise

What our clients say about us

Hear directly from our clients about how our AI services have helped them drive innovation, efficiency, and measurable business outcomes.

★★★★★

We chose Kellton as a partner because they had a good reputation with their customers. Though new to Generative AI, Kellton has all the right talents needed to build the innovative platform. Kellton has been with Evise every step of the way, from sales engagement to testing, and working with Kellton has been enjoyable overall.

William Bowers.

Co-Founder & CEO of Evise.ai

★★★★★

Team Kellton scalable and agile solutions have given us a competitive edge in the QSR space, while enriching customer experience.

Vipin Gupta.

Head of Digital at KFC

★★★★★

Kellton helped us bring our vision to reality. They worked with us on various initiatives. One of them was to build mobile apps for Blackberry, iPhone, and Android platforms. The team was professional and helped us build high-quality mobile apps faster. We look forward to many more working opportunities with them.

Pranav Bhasin.

Head of Product at MakeMyTrip

Awards & Certifications

We are globally recognized for AI excellence, delivery quality, and consistent client satisfaction across industries and geographies.

 

ISG

 

Avasant

 

Zinnov Zones

 

Deloitte Fast 50

Frequently Asked Questions (FAQ)

What happens to our custom code during migration?

Every InfoPath form, workflow, and custom web part is triaged during the Assess phase and mapped to a modern equivalent — Power Apps, Power Automate, or SPFx — before migration day, not discovered after.

Do we have to move fully to the cloud?

No. SharePoint Server Subscription Edition is a fully supported on-premises target if regulatory or infrastructure constraints keep you there. Target selection is confirmed during Assess, not before we've looked at your environment.

What if something doesn't reconcile after a migration wave?

We roll back. A tested rollback plan is validated before every cutover, not written after something goes wrong.

How is this different from buying a migration tool ourselves?

Tools move files. This engagement maps your permissions debt, your custom code, and your governance gaps first, so the tool executes an actual plan instead of guessing at a folder structure.

Which SharePoint versions and sources do you migrate from?

SharePoint Server 2013, 2016, and 2019, on-premises or online, plus network file shares, Box, Dropbox, Google Drive, and Microsoft 365 tenant-to-tenant scenarios like M&A or consolidation.

How long does a full migration take?

A Foundation engagement for a single business unit typically runs 4–6 weeks. A Premium engagement across a full enterprise typically runs 20–28 weeks. Both follow the same five phases — Assess, Architect, Pilot, Migrate, Hypercare — only the depth and wave count change.

Ready to Build Your Digital Future?

Don’t let legacy technology hold back your growth. Partner with Kellton and turn complexity into a competitive advantage. Whether you need expert digital application consulting or a full-scale digital app development team, we are ready to accelerate your journey.

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