Slack to Teams Migration » Migration Tool Comparison

Slack to Teams Migration: Netwoven vs CloudFuze vs Microsoft Native Tool — Full Comparison

Comprehensive comparison between native Microsoft tools, 3rd-party products, and Netwoven’s full-fidelity consulting services.

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Slack to Teams Migration: Tool Comparison

Comprehensive side-by-side analysis of Microsoft native tools, CloudFuze, and Netwoven Services.

0/4: Not Supported
1/4: Poor
2/4: Moderate
3/4: Better
4/4: Best

* Analysis based on market capability benchmarking as of March 2026.

Key Features Microsoft Migration Manager CloudFuze Netwoven Comparison Summary
Type of Solution Provided (Service vs. Product)
  • Native Microsoft Migration Manager tool.
  • You are responsible for configuring and running the tool with limited advisory support from Microsoft FastTrack and documentation on how to use the tool.
  • 3rd party ISV product.
  • You are responsible for configuring and running the tool with limited advisory support and documentation on how to use the tool.
  • End-to-end consulting service.
  • Service includes inventory, assessment, strategy, planning, adoption & change management, UAT, execution, & hypercare.
    Most vendors provide a migration tool, with limited documentation and advice, with which your team needs to execute a migration.

    Netwoven brings the tools, educates, advises and consults you on how to successfully execute your migration and then gets the job done, keeping your team in the loop throughout the project.
DM & GM Migration
0/4
  • Not Supported
1/4
  • Slow: <100K messages per week
  • Requires every user to be migrated to complete 2 consent / authentication requests.
  • Loses original message timestamp.
  • Our testing also showed that replies are not migrated in Delta Migrations.
4/4
  • High velocity: 10M – 30M+ messages per week.
  • No user consent required.
  • Migration to Teams Chat or MS Teams Slack Archive App with full authorship data and fidelity.
 Netwoven is currently the only vendor that provides a full-fidelity migration of Slack Direct and Group Messages into Microsoft Teams.
Channel Migration
3/4
  • Supports migration to new or existing Teams, but only to newly created Channels, created by the tool. No migration to existing Channels.
  • Supports migration to all Channel types (Standard, Private & Shared).
  • Microsoft recently updated the tool to support multi-workspace Slack Enterprise Grid or Enterprise+ environments, but you can only connect the tool to one Workspace at a time.
2/4
  • Full support for migration to Standard Channels in newly created Teams.
  • Does not support migration to Private and Shared Channels in new Teams.
  • Limited support for migration to any Channel type in existing Teams – migrations are slow and lose message authorship and timestamp data. Migrating into existing channels puts old messages as the most recent in the Channel.
  • Supports all Slack licensing levels.
4/4
  • Full migration velocity and fidelity (with authorship, timestamp and message interleaving) supported to new and existing Teams and all Channel types.
  • Supports all Slack licensing levels.
 Netwoven can migrate your Slack Channel data into any new or existing Team or Channel and will properly interleave and apply authorship and timestamp information.

Other vendors have limited capabilities for migration targets, authorship & timestamp data loss and / or slow migration speeds as concerning challenges.
Message migration fidelity
2/4
  • Timestamp & authorship preserved.
  • Does not support migration of app / bot messages.
  • Limited markup conversion.
  • Doesn’t support migration of custom emoji.
3/4
  • Timestamp & authorship lost for all targets except for standard Channel in new Team.
  • Our testing showed good migration fidelity for message syntax.
  • Doesn’t support migration of custom emoji.
4/4
  • Timestamp & authorship preserved.
  • Supports migration of app / bot messages.
  • Best markup conversion of tested methods.
  • Standard and custom emoji support.
 Netwoven provides the highest fidelity in the migration of message syntax and metadata (timestamps & authorship) of the tested migration methods.
Pinned messages
0/4
  • Not Supported
2/4
  • Claims to support migration of pinned messages, but in our testing it only pinned the most recent pinned message for a chat or channel and lost all previous.
4/4
  • Fully Supported for DM, GM and Channel Messages. All pinned messages are migrated.

 Netwoven migrates all pinned messages from Slack DM, GM and Channels.

Other vendors either do not support or provide only limited support for migrating pinned messages.
Reactions

Not Supported

  • Their documentation says “Standard Reactions” are supported for Channel Messages.

Not Supported

 Not Supported The Team Graph APIs only supports reactions to be applied with…
Migration of Slack WF’s
0/4
  • Not Supported
0/4
  • Not Supported
3/4
  • Advisory support or “app factory” (dev service) for re-platforming to Power Automate.
 Netwoven is unaware of any other vendor that offers the capability to move Slack Workflows to Microsoft 365.
Migration of Slack Custom Apps / Integrations
0/4
  • Not Supported
0/4
  • Not Supported
3/4
  • Advisory support or “app factory” (dev service) for re-platforming to Power Automate & Microsoft 365 / Teams customizations.
 Netwoven is unaware of any other vendor that offers the capability to move Slack custom apps and integrations to Microsoft 365.
Channel Message Migration Velocity
3/4
  • <15M per week (only to new Channels).
1/4
  • New Standard Channels – <250K per week
  • All other Channels – <100K per week
4/4
  • 18M – 25M per week
 Netwoven provides the fastest evaluated migration speeds for DM / GM migrations, more than 100x faster than some other vendors.
DM/GM Migration Velocity
0/4
  • Not Supported
1/4
  • <100K per week
4/4
  • 10M – 30M+ per week
 Netwoven provides the fastest evaluated migration speeds for DM / GM migrations. more than 100 times faster than some other vendors.
Information Architecture for Teams / Channel Hierarchy & Channel Mapping
1/4
  • An interface is provided to capture mapping or upload a CSV.
1/4
  • An interface is provided to capture mapping or upload a CSV.
4/4

Guidance provided for:

  • Optimal usage of Teams for RBAC enablement and sprawl management
  • Optimal usage of Channel types for security & governance
  • Optimal Channel Mapping
    Netwoven provides reporting and expert guidance to define the ideal Team and Channel information architecture and mapping from Slack to Teams.

    Other vendors ask you to provide the mapping with minimal to no advice on best practices and specific guidance for your Slack usage & membership.
Migration to Teams Shared Channels
3/4
  • Supported, but only to newly created Shared Channels created by the Migration Tool.
1/4
  • Minimal support with slow migration and lost message authorship and time stamp.
4/4
  • Fully Supported to new and existing Shared Channels.
    Migration to Shared Channels in Microsoft Teams is a best practice for managing sprawl, increasing resiliency in your information architecture and providing maximum flexibility after the migration. Netwoven provides the only full-capability service to migrate to new and existing Shared Channels.
Migration data security
3/4
  • No user consent required.
  • Least privileges principles best practices used and verified with discerning enterprise security teams.
  • Storage in your security perimeter, compute in Microsoft’s.
1/4
  • Significant overreach in requested consent & permissions give CloudFuze full site ownership and read / write permissions to every SharePoint and OneDrive site in your tenant plus other unnecessary permissions across other workloads. Consult your security team.
  • Storage and compute of your Slack data is outside your security perimeter.
4/4
  • No user consent required.
  • Least privileges principles best practices used and validated with discerning client enterprise security teams.
  • All storage and compute in your security perimeter.
 The security of your organization’s Slack data is of paramount importance. Netwoven provides a service with least privileges principles applied and operates entirely within your security perimeter.

All other evaluated vendors have challenges, some with CRITICAL risks, that should be carefully evaluated by your security and compliance teams.
Adoption & Change Management
1/4
  • Microsoft Teams general adoption materials, Migration Manager documentation, and FastTrack support for how to use the migration tool. These are not really related to helping users with the transition.
1/4
  • Support documentation + Advisor / Support for how to use the migration tool.
4/4
  • ACM Strategy workshops and extensive example content – Communication Plan, Copy, Training Plan, Help Center with seeded content, AI Agent for Help Center.
 Netwoven provides comprehensive adoption and change management services and assets to support business continuity throughout the transition.

Other vendors provide help on how to use their migration tool and Microsoft has general Teams adoption and training assets. This typically falls far short of what is needed to achieve business continuity.

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