Case Study: Colliers International achieves rapid, zero‑downtime cloud migration with Office 365

Cloud Vantage Services delivers fast, seamless cloud deployment with zero downtime for commercial real estate firm

Colliers International, a global commercial real estate firm with about 13,500 employees and more than 500 offices, faced a fragmented, on‑premises email infrastructure (40 Exchange environments) that couldn’t meet rapidly growing storage and collaboration needs. With thousands of desktops and mobile devices worldwide and limited in‑house cloud experience, Colliers needed a scalable, low‑risk solution to centralize email, improve efficiency and support faster business growth.

Colliers engaged Microsoft Cloud Vantage Services to remediate on‑prem systems, train the help desk, and migrate users to Office 365. The team migrated 3,000 mailboxes in three weeks (project complete in six weeks) with zero downtime, delivered 25 GB mailboxes (10x increase), cut IT support time by up to 60%, and improved agility for acquisitions and global collaboration—while transferring cloud expertise to Colliers’ IT team and providing a single point of accountability.

Colliers International

Veresh Sita

Global CIO