Calendar FreeBusy Coexistence
The only solution on the market to share free/busy calendar information between multiple heterogeneous tenants - Microsoft 365, Google Workspace, and Exchange On-Premises.
Share calendar availability between any combination of platforms
Microsoft 365 
Exchange On-premises 
Google Workspace 
What is Calendar FreeBusy?
Cloudiway provides a calendar free/busy lookup tool that can be used independently or as part of Cloudiway's full enterprise coexistence suite.
Share user, room, and equipment calendar availability across remote systems seamlessly, so that everyone can get on with business. Whether you're merging businesses or consolidating remote systems, making calendar free/busy information available to all your users means one less problem during your transition.
How FreeBusy Works
Native calendar integration with automatic availability lookup
Create Meeting Request
User creates a meeting request in their native calendar application (Outlook, Google Calendar, etc.)
Check Availability
User clicks "Scheduling Assistant" (Microsoft 365) or "Find a Time" (Google) to view attendee availability
Cloudiway Retrieves Data
Cloudiway automatically queries the remote tenant and retrieves the free/busy information
Display Results
Availability is displayed in the native calendar interface as if all users were in the same system
When a user wants to know if another user is available, they simply create a meeting request and click on the "Find a Time" tab (Google) or "Scheduling Assistant" (Microsoft 365). Cloudiway handles the rest, sending requests between tenants and updating the display in real-time.
When to Use FreeBusy
Calendar coexistence for every business scenario
Mergers & Acquisitions
Enable seamless scheduling between newly merged organizations with different email platforms.
During Migration
Maintain productivity during mailbox migrations with uninterrupted calendar availability across source and target.
Long-Term Coexistence
Support indefinite multi-platform environments where different business units use different email systems.
Enterprise Coexistence Suite
Combine with GALSync and Mail Routing for a complete enterprise coexistence solution.
Calendar FreeBusy Features
Enterprise-grade calendar availability sharing
Cross-Platform Availability
Share calendar free/busy information between Microsoft 365, Google Workspace, and Exchange On-Premises seamlessly.
Real-Time Lookup
Instantly retrieve availability information when scheduling meetings using native calendar interfaces.
User, Room & Equipment
Share availability for users, meeting rooms, and equipment calendars across all connected systems.
Multi-Tenant Support
Works with any number and combination of Microsoft 365 tenants, Google Workspace systems, and Exchange servers.
Secure & Stable
Enterprise-grade security with stable, reliable calendar synchronization you can trust.
Flexible Duration
Use as a short-term solution during migration or a long-term utility for ongoing coexistence.
Calendar FreeBusy Benefits
Why organizations choose Cloudiway FreeBusy
Seamless Communication
Enable seamless scheduling across multi-system environments without users needing to know which platform others use.
Zero User Training
Users continue using their familiar calendar tools. Free/busy lookup works automatically in the background.
Business Continuity
Maintain productivity during transitions. Users can schedule meetings regardless of migration status.
Calendar FreeBusy FAQ
Everything you need to know about Calendar FreeBusy
What platforms does FreeBusy support?
FreeBusy supports Microsoft 365, Google Workspace (formerly G Suite), and Exchange On-Premises (2007 or later). It works with any combination of these platforms.
How does FreeBusy work with Microsoft 365?
When users click "Scheduling Assistant" in Outlook or Outlook on the web, Cloudiway automatically retrieves availability from remote tenants and displays it in the native interface.
How does FreeBusy work with Google Workspace?
When users click "Find a Time" in Google Calendar, Cloudiway retrieves availability from connected Microsoft 365 tenants or Exchange servers and displays it natively.
Can FreeBusy share room and equipment availability?
Yes, FreeBusy supports sharing availability for users, meeting rooms, and equipment calendars across all connected systems.
Is FreeBusy a temporary or permanent solution?
FreeBusy can be used as a short-term solution during migration or as a long-term utility for ongoing coexistence. Many customers use it indefinitely for M&A scenarios.
Does FreeBusy work with GALSync?
Yes, FreeBusy is part of Cloudiway's enterprise coexistence suite and works seamlessly with GALSync and Mail Routing for a complete solution.
How many tenants can FreeBusy connect?
FreeBusy can connect any number of tenants. Whether you have 2 or 20 different email systems, FreeBusy can share availability between all of them.
What information is shared?
FreeBusy shares availability status (free, busy, tentative, out of office) without exposing meeting details, maintaining privacy while enabling scheduling.
FreeBusy Resources
Explore documentation, guides, and related solutions
Ready to enable calendar coexistence?
Start sharing free/busy information across your organization today