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MICROSOFT 365 CONSULTING · WORKLOADS

Microsoft Teams Consulting and Migration, with every thread, file and reaction intact

TechTiera designs, deploys and governs Microsoft Teams, then moves your history in from Slack, Workplace from Meta archives and other collaboration tools, with threads, authors, timestamps, attachments, reactions and mentions intact.

Talk to a Microsoft 365 expert
Explore digital workplace capabilities & delivery details
50Certified Microsoft 365 consultants
1,000+Identities per managed client estate
11Slack elements mapped to Teams
24x7Managed support and monitoring
MICROSOFT 365. ONE TEAM.
History moves with its context.

Threads, authors, timestamps, attachments, reactions and mentions are rebuilt in Teams through the Microsoft Graph import APIs.

In short

What is Microsoft Teams Consulting and Migration?

Microsoft Teams consulting covers the architecture, rollout, governance and support of Teams for chat, channels, meetings, calling (Teams Phone), meeting rooms and apps. Teams migration moves conversations and files from platforms such as Slack, archived Workplace from Meta data, Google Chat or another Microsoft 365 tenant into Teams, SharePoint and OneDrive. TechTiera delivers both, using Microsoft's Teams Import API and migration tooling to preserve original authors, timestamps, threads, attachments and reactions.

Reviewed by TechTiera's Microsoft 365 Center of Excellence

At a glance

  • Migration sources: Slack (Free to Enterprise Grid, incl. Slack Connect), Workplace from Meta exports and archives, Google Chat, another Microsoft 365 tenant; other platforms assessed on request
  • Fidelity: Original author and timestamp, threads and replies, attachments, standard reactions, @mentions, edits, pins and channel structure
  • Teams consulting: Architecture, governance, Teams Phone, Teams Rooms, meetings and town halls, apps and bots, Copilot in Teams
  • Tooling: Microsoft Teams Import API, Microsoft's native Slack-to-Teams tool, specialist third-party tools and TechTiera scripts
  • Assurance: Per-channel reconciliation of messages, replies, files and reactions, plus sign-off reports

Microsoft Teams Consulting & Migration

Why collaboration migrations are harder than email migrations

An email is a self-contained item. A Slack or Workplace conversation is a graph: a message belongs to a thread, references people by ID, embeds files stored elsewhere, carries reactions from other users and links to other channels. Copy the text alone and you lose the context that made the history worth keeping. A high-fidelity migration rebuilds that graph in Microsoft 365:

  • Identity mapping first. Every source user ID (including deactivated users, guests and bots) is mapped to an Entra ID account or a clearly labelled placeholder, so authorship and @mentions resolve correctly.
  • Files land in SharePoint and OneDrive, not in Teams. Channel attachments go to the channel's SharePoint folder and chat attachments to OneDrive; the imported message then references the migrated file, preserving permissions.
  • Threads are imported parent-first so replies attach to the right post, in original chronological order.
  • Imported history is written with original timestamps and authors through Microsoft Graph's import capability, not reposted by a service account with today's date.

Microsoft Teams Consulting & Migration

Slack to Microsoft Teams migration

Slack migrations start with what you are allowed to export. Free and Pro workspaces export public channels only. Business+ workspaces can request export of private channels and direct messages subject to approval. Enterprise Grid exposes full data through the Discovery API. We confirm the export path, legal sign-off and data scope before any tooling is chosen.

How Slack content maps to Teams

Slack elementMicrosoft Teams / Microsoft 365 targetTechTiera notes
WorkspaceTeams organized by department, project or functionWe redesign rather than copy one-to-one; Slack workspaces often hold hundreds of channels that belong in a handful of teams
Public and private channelsStandard and private channelsChannel limits per team and private-channel import constraints are planned for up front
Slack Connect channelsShared channels with Entra B2B direct connectCross-tenant access policies agreed with each partner organization
ThreadsChannel posts and reply chainsParent-first import keeps replies in context
Direct and group messages1:1 and group chats, or a read-only archiveChat import has tighter API constraints than channels; we agree the approach (live import, archive channel or OneDrive HTML archive) per legal and user needs
Files and snippetsSharePoint channel folders and OneDriveVersions and original filenames retained; external-hosted links validated
ReactionsTeams reactionsStandard emoji map directly; custom emoji are mapped to the nearest standard reaction or kept as text so meaning is not lost
@mentions and user groups@mentions and Teams tagsResolved through the identity map
Pins, bookmarks and canvasesPinned posts, channel tabs, Loop pages or SharePoint pagesConverted so key references stay one click away
Workflows, slash commands and appsPower Automate, Teams workflows, Teams apps and botsRebuilt and tested; see Power Automate consulting
Retention and legal holdsMicrosoft Purview retention and eDiscoveryImported messages become discoverable in Microsoft 365 once migration completes

Choosing the right Slack migration tool

Microsoft now includes a native Slack-to-Teams migration tool in the Microsoft 365 admin center (Setup > Migration and imports). It is a good fit for straightforward channel migrations: it works from a Slack export, handles one workspace at a time, focuses on channel content, and does not carry custom emoji reactions or #channel links. For direct messages, multiple workspaces or Enterprise Grid orgs, Slack Connect channels, delta passes, or strict fidelity requirements, we use specialist third-party tooling or TechTiera scripts built on the Microsoft Graph import APIs. Many programs combine both, and we choose per workload rather than per vendor relationship.

Microsoft Teams Consulting & Migration

Workplace from Meta: bringing archived history into Microsoft 365

Workplace from Meta closed on May 31, 2026, after a read-only period that began on September 1, 2025. Live migration is no longer possible, but the history is not lost if it was exported. Many organizations hold Workplace data as Graph API exports, "Download your information" packages or third-party archive snapshots. TechTiera ingests these archives and rebuilds the content where people will actually look for it:

Workplace contentMicrosoft 365 target
Groups and their posts, comments and reactionsTeams channels with reply chains, or Viva Engage communities for broadcast-style groups
Knowledge LibrarySharePoint pages and hub sites, with navigation rebuilt
Files and photosSharePoint document libraries with metadata
Live and recorded videoMicrosoft Stream (on SharePoint)
Work Chat historySearchable archive in OneDrive or a compliance-retained repository

If your organization exported Workplace data but has not yet imported it, we start with an archive assessment: what was captured, in what format, which identities it references, and what retention obligations apply.

Microsoft Teams Consulting & Migration

Other collaboration migrations

  • Microsoft 365 tenant-to-tenant: Teams, channels, chats, OneDrive and SharePoint for mergers, acquisitions and divestitures, coordinated with mailbox and identity moves.
  • Google Chat and Google Workspace: spaces and files moved alongside Gmail and Drive migrations.
  • Legacy chat and voice: Skype for Business Server, now past end of support, retired in favor of Teams and Teams Phone.
  • Other platforms such as Zoom Team Chat, Webex and Mattermost are assessed on request; where no import tooling exists we build export-transform-import pipelines on the Microsoft Graph import APIs.

Microsoft Teams Consulting & Migration

Microsoft Teams consulting beyond migration

AreaWhat we design and deliver
Architecture and governanceTeam and channel design, creation and naming policies, templates, guest and external access, shared channels, lifecycle and archiving. See governance consulting
Teams PhoneCalling Plans, Operator Connect, Direct Routing with certified session border controllers, auto attendants and call queues, emergency calling, number porting, contact center integration
Meetings and eventsMeeting policies, town halls and webinars, Teams Premium protection features, recording and transcription with retention
Teams Rooms and devicesRoom design and certified devices, Teams Rooms Pro management, Bluetooth and proximity join, front-of-room experiences
Network readinessNetwork assessment, QoS, local internet breakout, VPN split tunneling for Teams media, call quality dashboards
Apps and automationLine-of-business apps, bots, message extensions, Power Automate workflows and Copilot agents in Teams
Copilot in TeamsMeeting recap and intelligent recap readiness, transcription policy, sensitivity labels for meetings
ComplianceRetention, eDiscovery, communication compliance, information barriers and compliance recording for regulated industries

Microsoft Teams Consulting & Migration

Adoption: making people stay in Teams

Migration only counts if users stop going back to the old tool. Our adoption plan includes champion networks, role-based training for the habits people bring from Slack or Workplace (threads, shortcuts, notifications, status), a clear cut-off date with read-only source access, and usage analytics in the Teams admin center to find teams that need help.

How we deliver

How does a TechTiera engagement run?

Each phase ends with a deliverable you can review before the next one starts.

  1. Discover

    Source inventory: workspaces, channels, users, files, integrations, export rights and retention needs.

  2. Design

    Target Teams structure, identity map, fidelity rules, tool choice, governance and wave plan.

  3. Pilot

    Representative channels migrated and verified by business owners.

  4. Migrate

    Waves imported with original authors and timestamps; delta passes up to cut-over.

  5. Cut over

    Source set to read-only, integrations rebuilt, users supported through hypercare.

  6. Adopt and operate

    Champion network, analytics and ongoing Teams managed services.

Accelerators and tools

Accelerators and tools TechTiera brings

Microsoft-native tooling, proven third-party products where they add value, and TechTiera's own accelerators.

  • Microsoft Teams Import API (Microsoft Graph migration mode)
  • Microsoft Slack-to-Teams migration tool (admin center)
  • Specialist third-party collaboration migration tools, selected per scenario
  • TechTiera identity-mapping and reconciliation scripts
  • Teams Rooms Pro, Call Quality Dashboard and Network Planner
  • Teams provisioning templates with Power Automate approvals
Discuss your environment
50Certified Microsoft 365 consultants
11Slack elements mapped to Teams
6Global delivery regions
24x7Managed support and monitoring

Client work

Microsoft 365 programs we have delivered

Two full-lifecycle programs: each built from an empty tenant to 1,000 identities, then run by TechTiera under long-term managed services agreements.

Biotechnology · United States

Microsoft 365 from scratch for a large US-based biotech company

TechTiera implemented Microsoft 365 from the ground up and scaled the environment to 1,000 identities, delivering full-service consulting across identity, end-user computing, Exchange Online, SharePoint, OneDrive, Entra ID, Purview, Power Automate, Power BI and integrations with other enterprise systems. TechTiera continues to provide enhancements and day-to-day support under a long-term managed services agreement.

  • Entra ID
  • EUC
  • Exchange Online
  • SharePoint + OneDrive
  • Purview
  • Power Automate
  • Power BI
  • Integrations
  • Managed services
Reinsurance · Bermuda

Microsoft 365 from scratch for a Bermuda-based reinsurer

TechTiera implemented Microsoft 365 from scratch and scaled it to 1,000 identities, providing full-service consulting across identity, end-user computing, migrations, Exchange Online, SharePoint, OneDrive, Entra ID, Purview, Power Automate, Power BI and integrations with other systems, aligned to the expectations of a BMA-regulated insurer. TechTiera delivers ongoing enhancements and day-to-day support under a long-term managed services agreement.

  • Entra ID
  • EUC
  • Migrations
  • Exchange Online
  • SharePoint + OneDrive
  • Purview
  • Power Automate
  • Power BI
  • Managed services

Ways to engage

From licensing to managed services, one accountable team

Start wherever you are. Each stage can be bought on its own, and most clients combine several under one team.

Licensing

For teams renewing or changing Microsoft agreements

  • E3, E5, Business Premium and Copilot advice
  • Procurement through TechTiera
  • Right-sizing after deployment
Discuss licensing →

Implementation

For new tenants, migrations and major rollouts

  • Assessment and design
  • Build, migrate and adopt
  • Documented baselines and runbooks
Discuss implementation →

Enhancements and complex solutions

For teams that need more than configuration

  • Custom development and integrations
  • Automation and AI agents
  • Power BI and Fabric solutions
Discuss enhancements →

Managed services

For organizations that want Microsoft 365 run for them

  • 24x7 monitoring and L1–L3 support
  • Industry-standard SLAs
  • Monthly service reviews
Discuss managed →

Why TechTiera

Why choose TechTiera for Microsoft 365?

50 certified Microsoft 365 consultants

A dedicated Microsoft 365 practice inside TechTiera's Center of Excellence, with architects across identity, endpoints, collaboration, Power Platform, data, Azure and security.

Enterprise content management heritage

Decades of ECM delivery mean records, retention and regulated document control are designed in, not bolted on.

Our own accelerators and tools

DocOrbit migration, tenant baseline templates, PowerShell automation, JML provisioning, governance and security assessment toolkits.

Full lifecycle, one team

The team that designs your environment stays accountable for running it, from licensing to managed services.

Azure, DevOps and cloud migration depth

Identity, security and data span Microsoft 365 and Azure, so we design and operate both together.

Proven in regulated industries

Full-service Microsoft 365 programs for a US biotech company and a Bermuda reinsurer, each scaled to 1,000 identities.

Global service desks, follow-the-sun

USA, India, Europe, APAC (Malaysia, the Philippines, Indonesia), the UAE and Australia.

SLA-based support with 24x7 coverage

P1 response in 15 minutes, monthly service reviews and clear escalation paths.

Questions, answered

Microsoft Teams Consulting & Migration FAQs

Can we migrate Slack messages to Microsoft Teams with the original dates and authors?

Yes. Using Microsoft Graph's Teams import capability, messages are written into channels with their original timestamps and mapped authors, and threads keep their reply structure. Messages from users who have left can be attributed to placeholder identities.

Are reactions and attachments migrated from Slack to Teams?

Yes. Attachments are moved to the channel's SharePoint folder or the user's OneDrive and linked from the migrated message. Standard emoji reactions migrate as Teams reactions; custom emoji are mapped to a standard reaction or preserved as text.

Can Slack direct messages be migrated?

Yes, when your Slack plan and approvals allow DM export. Because chat import is more constrained than channel import, we agree whether DMs become Teams chats, a read-only archive channel or a searchable OneDrive archive.

Should we use Microsoft's free Slack-to-Teams tool?

For simple channel-only migrations from a single workspace, it can be enough. If you need direct messages, Enterprise Grid, Slack Connect, custom emoji, delta passes or detailed reconciliation, combine it with specialist tooling. We assess and recommend per workload.

Workplace from Meta has shut down. Can we still move our data to Microsoft 365?

Yes, if your organization exported it before May 31, 2026. We import Workplace exports and archives into Teams channels, Viva Engage communities, SharePoint pages and Stream so the history is searchable and retained in Microsoft 365.

How long does a Slack to Teams migration take?

It depends on message and file volume more than user count. Microsoft's guidance is to plan for roughly two to three messages per second per channel, so large channels are run in parallel waves. A typical mid-size workspace completes in 4 to 10 weeks including pilot and cut-over.

Do Slack integrations and workflows move to Teams?

Not automatically. We inventory Slack apps, workflows and slash commands, then rebuild them with Teams apps, Power Automate or Copilot Studio agents, retiring the ones nobody uses.

Do you also provide Teams Phone and Teams Rooms services?

Yes. TechTiera designs and deploys Teams Phone through Calling Plans, Operator Connect or Direct Routing, and Microsoft Teams Rooms with ongoing device management.

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