Moving SharePoint content to a modern environment is rarely as simple as copying files from one location to another. A migration can expose years of accumulated permissions, outdated documents, customizations, workflows, integrations, and governance decisions that were never documented.
That is why SharePoint Migration Readiness should be treated as a formal pre-migration activity—not a quick technical check before the migration tool is switched on.
A structured readiness process helps IT teams understand what they have, what should be migrated, what needs remediation, and what should be left behind. It also provides the foundation for a practical SharePoint migration strategy that reduces downtime, data loss, permission problems, and user disruption.
Before beginning a SharePoint Online migration, use these 15 checks to determine whether your environment is genuinely ready.
What Is SharePoint Migration Readiness?
SharePoint Migration Readiness is the process of evaluating your existing SharePoint environment, content, users, permissions, applications, governance, and Microsoft 365 configuration before migration begins.
A good readiness assessment should answer questions such as
- What content needs to move?
- What content can be archived or deleted?
- Which permissions need remediation?
- Which customizations will work in SharePoint Online?
- Which workflows and integrations need rebuilding?
- Is the Microsoft 365 tenant configured correctly?
- Are users prepared for the new environment?
- Has the migration process been tested?
Without clear answers, organizations can end up migrating problems instead of solving them.
15 Critical SharePoint Migration Readiness Checks
1. Build a Complete Content Inventory
Start by identifying every SharePoint site, site collection, library, list, folder, document, and relevant workload currently in use.
Record useful information such as
- Site and library names
- Owners and administrators
- Number of files
- File types
- Last modified dates
- Storage consumption
- Permission structure
- Business purpose
- Criticality
This inventory becomes the baseline for your SharePoint migration assessment.
Action: Create a centralized inventory and classify workloads as migrate, archive, remediate, or retire.
2. Analyze Data Volume and Storage Requirements
Before SharePoint Data Migration begins, determine how much data actually needs to move.
Large environments may contain millions of documents, oversized files, obsolete versions, and unnecessary duplicates. Moving everything without analyzing volume can increase migration time and create unnecessary storage and governance costs.
Check:
- Total storage consumption
- Large files
- File counts
- Version history
- Database or site sizes
- Expected growth
- Destination storage requirements
Action: Establish a realistic migration volume and identify high-volume workloads that require separate migration waves.
3. Identify Outdated, Duplicate, and Unnecessary Content
A migration is an opportunity to clean up—not relocate digital clutter.
Look for documents that have not been accessed or modified for years, duplicate files, obsolete project sites, abandoned libraries, and content with no identifiable business owner.
Migrating unnecessary content increases cost and makes the destination harder to manage.
Action: Establish retention and cleanup rules before migration. Get business owners to approve what should be archived or deleted.
4. Review SharePoint Versions and Compatibility
Your source environment matters. Organizations migrating from SharePoint Server 2013, 2016, 2019, Subscription Edition, or another legacy platform may encounter different compatibility considerations.
Review:
- SharePoint version
- Database architecture
- Custom solutions
- Unsupported features
- Third-party components
- Authentication configuration
- Existing service applications
Action: Document the source architecture and identify components that require replacement, redesign, or remediation before migration.
5. Audit Customizations
Legacy SharePoint environments often contain custom master pages, web parts, solutions, scripts, forms, branding, and other custom development.
Some customizations may not translate directly to SharePoint Online.
For example, a heavily customized SharePoint Server portal may require modernization rather than a straightforward lift-and-shift approach.
Action: Categorize every customization as retain, replace, redesign, or retire. Where appropriate, include SharePoint modernization in the migration roadmap.
6. Review Permissions and Access
Permissions are one of the biggest sources of migration-related problems.
Review:
- SharePoint groups
- Microsoft Entra ID groups
- Individual permissions
- Unique permissions
- Broken inheritance
- Orphaned accounts
- Former employees
- Excessive access
Do not assume that existing permissions are automatically appropriate for the destination environment.
Action: Apply least-privilege principles, remove unnecessary access, and simplify complex permission structures before migration.
7. Audit External Sharing
External sharing deserves its own readiness check because poorly controlled guest access can create security and compliance risks.
Identify:
- External users
- Guest accounts
- Anonymous links
- Shared documents
- External collaboration sites
- Existing sharing policies
Determine which external relationships are still legitimate.
Action: Remove stale external access and define appropriate guest-sharing policies in Microsoft 365 before migration.
8. Evaluate Security Controls
Migration should not weaken your security posture.
Assess authentication, identity protection, access controls, sensitive content, encryption requirements, auditing, and security policies.
Pay particular attention to sites containing:
- Financial information
- Customer records
- Intellectual property
- HR information
- Confidential contracts
- Regulated data
Action: Map sensitive content to appropriate security controls and validate access after migration.
9. Validate Compliance, Retention, and Governance
Your migration plan should account for regulatory and organizational retention requirements.
Determine whether content is subject to:
- Retention policies
- Retention labels
- Legal holds
- Records management
- eDiscovery requirements
- Industry-specific compliance requirements
Simply copying content without understanding its governance requirements can create serious downstream problems.
Action: Document governance requirements before moving regulated or business-critical content.
10. Review Metadata and Content Types
A successful SharePoint content migration involves more than moving documents. Metadata, content types, columns, views, taxonomy, and information architecture can be equally important.
Review:
- Site columns
- Content types
- Managed metadata
- Document properties
- Taxonomy
- Views
- Required fields
Poor metadata mapping can make migrated content difficult to search, filter, classify, and manage.
Action: Create a source-to-target mapping for metadata and content types before migration.
11. Assess Workflows and Automation
Legacy SharePoint workflows may depend on technologies or components that are not suitable for the target environment.
Inventory:
- SharePoint workflows
- Power Automate flows
- Scheduled processes
- Approval workflows
- Notifications
- Custom automation
Determine which processes can be migrated, rebuilt, replaced, or retired.
Action: Rebuild business-critical workflows using supported Microsoft 365 automation technologies and test them before production cutover.
12. IdentifyThird-Party Integrations
SharePoint environments frequently integrate with CRM platforms, document management systems, line-of-business applications, reporting tools, backup platforms, and custom applications.
An integration that works against the old environment may fail after migration.
Action: Create an integration dependency map and test every business-critical connection against the target environment.
13. Confirm Microsoft 365 Tenant Readiness
Your destination tenant needs to be ready before migration begins.
Validate:
- Microsoft 365 licensing
- SharePoint Online configuration
- Microsoft Entra ID
- User accounts
- Groups
- Security policies
- Conditional Access
- Storage
- Sharing settings
- Governance policies
This is an important part of Microsoft SharePoint Migration because technical readiness at the destination can directly affect migration execution.
Action: Complete a Microsoft 365 tenant readiness review before scheduling production migration waves.
14. Prepare Users and Business Owners
A technically successful migration can still fail if users cannot find their documents or do not understand the new environment.
Prepare users for changes involving:
- Site navigation
- Document libraries
- Sharing
- Permissions
- Search
- Teams and Microsoft 365 integration
- New collaboration processes
Assign business owners to critical sites and workloads.
Action: Create role-based communication and training, and provide users with clear information about what is changing and when.
15. Perform Migration Testing and Validation
Never make the production environment your first migration test.
Run a pilot using representative workloads and validate:
- Files
- Metadata
- Permissions
- Version history
- Links
- Workflows
- Search
- Sharing
- Integrations
- User access
Compare the source and destination systematically.
Action: Define acceptance criteria before the pilot. Only proceed to production after business and technical stakeholders approve the results.
SharePoint Migration Readiness Checklist
| SL. NO | Readiness Check | What to Validate | Recommended Action |
|---|---|---|---|
| 1 | Content inventory | Sites, libraries, files, owners | Build complete inventory |
| 2 | Data volume | Storage, file counts, versions | Size migration waves |
| 3 | Content cleanup | Duplicates, obsolete data | Archive or remove unnecessary content |
| 4 | SharePoint version | Source architecture and compatibility | Identify remediation requirements |
| 5 | Customizations | Web parts, scripts, solutions | Retain, replace, redesign, or retire |
| 6 | Permissions | Groups, users, unique access | Simplify and apply least privilege |
| 7 | External sharing | Guests and shared links | Remove stale access |
| 8 | Security | Sensitive data and controls | Validate security policies |
| 9 | Compliance | Retention, records, legal holds | Map governance requirements |
| 10 | Metadata | Columns, content types, taxonomy | Create source-to-target mappings |
| 11 | Workflows | Approvals and automation | Rebuild and test critical workflows |
| 12 | Integrations | Third-party and business systems | Test dependencies |
| 13 | Tenant readiness | Microsoft 365 and SharePoint configuration | Complete destination setup |
| 14 | User readiness | Training and communication | Prepare users and owners |
| 15 | Migration testing | Pilot, validation, acceptance | Test before production cutover |
What Happens If You Skip Migration Readiness?
Organizations that rush directly into migration commonly encounter problems such as
- Unexpected migration failures
- Missing or corrupted content
- Incorrect permissions
- Broken workflows
- Inaccessible documents
- Failed integrations
- Excessive migration timelines
- User resistance
- Unexpected downtime
- Compliance gaps
The expensive part is often not the migration itself. It is fixing the problems that were discovered only after users were already working in the new environment.
A structured SharePoint migration planning process moves those discoveries to the beginning—when they are much cheaper and easier to address.
Identify SharePoint Migration Risks Before They Become Costly
Get expert help assessing content, permissions, workflows, security, and integrations before migration. Build a practical roadmap for a smoother SharePoint move with less disruption.
Common SharePoint Migration Mistakes to Avoid
Migrating Everything: More data does not mean a better migration. Retire content that has no business value before moving it.
Treating Permissions as an Afterthought: Do not copy complex legacy permissions without reviewing whether users still need that access.
Ignoring Customizations: Assuming every legacy customization will work in SharePoint Online can lead to broken functionality after cutover.
Skipping Pilot Migration: A production migration should never be the first time your team validates the migration process.
Failing to Assign Content Owners: Every important site and workload should have someone accountable for approving migration decisions.
Underestimating User Adoption: The migration is not finished when the files arrive. Users need to understand where their content went and how they should work with it.
When Should You Consider Professional SharePoint Migration Services?
A straightforward migration with limited content, standard configurations, and simple permissions may be manageable internally.
However, professional SharePoint migration services can provide significant value when the environment includes:
- Large or complex SharePoint farms
- Millions of documents
- Multiple SharePoint versions
- Complicated permissions
- Extensive customizations
- Business-critical workflows
- Third-party integrations
- Compliance requirements
- Multiple migration waves
- Tight downtime requirements
- Hybrid or multi-platform environments
A professional migration team can perform a SharePoint migration assessment, build the migration roadmap, remediate source issues, execute pilot migrations, validate results, and support post-migration stabilization.
The objective should not simply be to move content. It should be to create a cleaner, more secure, better-governed SharePoint environment.
How to Reduce Migration Risk
A few practical measures can make a significant difference:
Reduce downtime: Use phased migration waves and incremental synchronization where appropriate rather than relying on one large cutover.
Reduce data loss: Maintain source backups and establish reconciliation procedures before decommissioning the source environment.
Prevent permission issues: Audit permissions before migration and perform post-migration access validation.
Limit user disruption: Communicate migration schedules clearly and migrate lower-risk workloads before business-critical sites.
Improve quality: Define migration acceptance criteria and compare source and destination data systematically.
Control scope: Separate cleanup, modernization, migration, and post-migration optimization into manageable phases.
FAQs
Complete a structured SharePoint Migration Checklist covering content inventory, data quality, permissions, security, customizations, workflows, integrations, tenant configuration, user readiness, and migration testing.
Not necessarily. Content that is obsolete, duplicated, or no longer required should generally be reviewed for deletion or archival before migration.
There is no single universal risk. In complex environments, permission problems, undocumented customizations, poor content quality, broken workflows, and inadequate testing are among the most common causes of post-migration disruption.
Conclusion
Successful SharePoint migration starts long before the first document is transferred.
By completing these 15 SharePoint Migration Readiness checks, IT teams can identify unnecessary content, resolve permission problems, understand customization dependencies, prepare Microsoft 365, test migration processes, and build a realistic SharePoint Migration Strategy.
The goal is not simply to move SharePoint data from one environment to another. The goal is to arrive at a cleaner, secure, well-organized environment that users can actually work with.
If your organization is planning a complex SharePoint Online migration, a professional readiness assessment can help identify risks before they become expensive migration problems. Consider working with an experienced SharePoint migration partner to assess your environment, plan the migration waves, validate the target architecture, and execute the move with minimal business disruption.
Our Related Posts
Cloud Migration Security: Risks & Best Practices
Key cloud migration security risks, challenges, and best practices to protect data and ensure compliance.
Microsoft 365 Setup Mistakes to Avoid Today
Avoid common Microsoft 365 setup errors that expose data and increase security risks for businesses.
Microsoft CSP Benefits & Growth for Business
Learn how becoming a Microsoft Cloud Solution Provider boosts growth, value-added services, and customer success.
Sorry, the comment form is closed at this time.