Case Study

Southern Sun: Delivering a zero- downtime Microsoft 365 migration across a large hospitality estate.

Executing a seamless, remote transition for 4,000+ endpoints across 100+ locations,
ensuring uninterrupted guest services and operational continuity.

Client Overview

Southern Sun is a leading hospitality group operating hotels and resorts across South Africa, the Seychelles and the Middle East. The group manages accommodation, restaurants, bars, conference and banqueting facilities, supporting both business and leisure travelers across more than 100 locations.

With operations running continuously, Southern Sun relies on stable, highly available technology platforms to support staff productivity and guest experience.

The Challenge

Following the unbundling of hotels from Tsogo Sun Holdings, Southern Sun was required to migrate its IT systems back to an independent environment. This included separating Active Directory, Exchange Online and Microsoft 365 from shared tenants and restoring full operational capability within its own environment.

The migration had to be completed entirely remotely, without engineers visiting hotel sites, and without introducing any downtime across Southern Sun’s estate. Any service interruption would have had a direct impact on hotel operations and guest services.

The Solution

Southern Sun engaged VTG to deliver the migration using a carefully planned, test‑driven approach. VTG designed the solution around remote tools and proprietary scripts developed through similar large‑scale projects, enabling complex migrations without physical site access.

A central element of the approach was the use of a pilot site, allowing extensive testing and refinement before live migration activity began. This enabled VTG to anticipate potential issues and adjust processes in advance, ensuring a smooth rollout.

Managed Support & Partnership

VTG worked in close collaboration with Southern Sun’s internal IT teams throughout the project, maintaining clear and continuous communication. The teams operated as a single unit, with VTG functioning as an extension of Southern Sun’s IT capability rather than an external supplier.

Client Feedback

"We had two really great teams working on this project, ours and VTG's, who communicated constantly and clearly and who really worked as a single entity to get this done. No drama, no problems, just smooth efficiency."

"We just loved the way VTG approached this project. It was difficult, but they were knowledgeable and committed, they really listened to what we needed, and in the end they tackled it in just the right way."

Southern Sun IT Leadership
Hospitality Group · 100+ Properties

The Results

VTG successfully migrated Southern Sun back to its own domain and into dedicated Exchange Online and Microsoft 365 tenants, impacting more than 4,000 endpoints across the organisation.

Crucially, the entire migration was completed with no downtime across any of Southern Sun’s 100 hotel locations, reinforcing VTG’s ability to deliver complex, high‑risk transformations in mission‑critical hospitality environments.