Enable seamless collaboration between Microsoft 365, Google Workspace, and Exchange during migration. Calendar free/busy sharing, Global Address List synchronization, and intelligent mail routing.
Enterprise coexistence enables users on different platforms (Microsoft 365, Google Workspace, Exchange) to collaborate seamlessly during migrations. It provides calendar free/busy sharing so users can schedule meetings across platforms, GAL synchronization for unified address books, and mail routing to ensure message delivery.
Enterprise coexistence is the ability for users on different email and collaboration platforms to work together seamlessly during migration periods. It enables calendar free/busy sharing, Global Address List synchronization, and mail routing between Microsoft 365, Google Workspace, and Exchange.
During cloud migrations, organizations often have users split between the source and target platforms, making cross-platform collaboration essential. Cloudiway's coexistence solution bridges this gap.
Our GALSync tool synchronizes Global Address Lists so users can find contacts on either platform. FreeBusy enables real-time calendar availability sharing between Microsoft 365 and Google Workspace. Together, they ensure uninterrupted productivity during migration.
Whether you're migrating between Microsoft 365 tenants, from Google Workspace to Microsoft 365, or maintaining long-term multi-platform environments, Cloudiway provides enterprise-grade coexistence.
Why Cloudiway coexistence outperforms alternatives
| Feature | Cloudiway | Native Solutions |
|---|---|---|
| Cross-Platform Support | Best M365, Google, Exchange | Limited to same vendor |
| Setup Complexity | Best Simple wizard-based | Complex configuration |
| Real-time Sync | Best Yes - instant updates | Often delayed |
| GAL + FreeBusy | Best Both included | Separate solutions |
| Multi-tenant Support | Best Unlimited tenants | Limited |
| Central Management | Best Single console | Multiple tools |
Everything you need for seamless cross-platform collaboration
Users see real-time availability across platforms when scheduling meetings, regardless of their email system.
Synchronize contact directories across Microsoft 365 and Google Workspace for unified address books.
Intelligent mail routing during migrations ensures emails reach users on either platform correctly.
Enable coexistence between multiple Microsoft 365 tenants during M&A transitions and consolidations.
Automatically provision and deprovision coexistence as users migrate between platforms.
Manage all coexistence settings from a single administrative console with comprehensive reporting.
Complete cross-platform functionality
Common use cases for enterprise coexistence
Enable cross-tenant collaboration during tenant-to-tenant migrations and M&A consolidations.
Maintain seamless collaboration between Microsoft 365 and Google Workspace users.
Coexistence during hybrid Exchange to Microsoft 365 cloud migrations.
Long-term coexistence for organizations maintaining multiple collaboration platforms permanently.
Enterprise-grade coexistence for seamless collaboration
Users continue scheduling meetings and finding contacts without disruption during migration.
Take the time you need for migration without pressure to move everyone at once.
Fewer user complaints about scheduling issues or missing contacts during transition.
Scales to support organizations with hundreds of thousands of users across platforms.
End users don't need to know who is on which platform - collaboration just works.
OAuth authentication, encrypted data transfer, and no password storage.
A simple 4-step setup process
Connect your source and target platforms using OAuth for secure authentication.
Set up Global Address List synchronization to share contact directories between platforms.
Configure calendar free/busy sharing for cross-platform meeting scheduling.
Use the admin console to monitor coexistence health and adjust settings as needed.
Real experiences with Cloudiway coexistence
"During our 6-month migration from Google Workspace to Microsoft 365, Cloudiway coexistence was essential. Users never complained about scheduling issues - it just worked seamlessly."
"After our merger, we needed to maintain two Microsoft 365 tenants indefinitely. Cloudiway GALSync and FreeBusy made cross-tenant collaboration feel native."
Complete these tasks before setting up coexistence
Common questions about enterprise coexistence
Enterprise coexistence enables users on different email platforms (Microsoft 365, Google Workspace, Exchange) to collaborate seamlessly during migration periods. It includes calendar free/busy sharing, GAL synchronization, and mail routing.
Migrations often take weeks or months. During this time, some users are on the old platform while others are on the new one. Coexistence ensures they can still schedule meetings, find contacts, and communicate effectively.
Cloudiway supports coexistence between Microsoft 365 tenants, Microsoft 365 and Google Workspace, and hybrid Exchange environments migrating to the cloud.
When a user on Microsoft 365 schedules a meeting with someone on Google Workspace, the scheduling assistant shows their availability in real-time, just as if they were on the same platform.
GAL (Global Address List) synchronization creates contact objects in each platform so users can find and email colleagues regardless of which system they're on. It syncs names, emails, phone numbers, and photos.
Coexistence should be maintained throughout the migration period until all users have been migrated. Some organizations keep it active for a transition period after migration completes, or permanently for multi-platform environments.
Yes, meeting rooms and equipment mailboxes can be included in coexistence, allowing users on either platform to book shared resources and see room availability.
Yes, Cloudiway uses OAuth and secure APIs to communicate with both platforms. No passwords are stored, all data transfer is encrypted, and connections use modern authentication standards.
Yes, some organizations use coexistence permanently when they need to maintain multiple platforms, such as after a merger where each company keeps its own email system.
Distribution lists and mail-enabled groups can be synchronized between platforms, ensuring that group emails reach all members regardless of their current platform.
Coexistence is typically licensed per user per month. Cloudiway offers flexible licensing based on the number of users requiring coexistence features.
Yes, Cloudiway offers a free trial so you can test coexistence features with your own environments before committing to a subscription.
Coexistence today focuses on directory synchronization (GALSync) and calendar free/busy sharing, which work across Microsoft 365, Google Workspace and Exchange. Real-time messaging interoperability between Microsoft Teams and Google Chat is not part of the coexistence suite — for those scenarios we recommend a full migration from one chat platform to the other once teams have settled on a single collaboration platform.
Learn more about coexistence tools
Global Address List synchronization tool
Learn more GALSync Administration GuideComplete admin guide for GALSync setup
Read guide GALSync Video TutorialWatch how to configure GALSync
Watch video FreeBusy Product PageCalendar free/busy coexistence tool
Learn more FreeBusy Administration GuideSetup guide for calendar free/busy lookup
Read guide FreeBusy Video TutorialWatch how to configure free/busy lookup
Watch video Forwarding vs Mail Routing | Cloudiway Blog Learn moreStart your free trial today and enable cross-platform collaboration for your organization.
