Microsoft 365 migration in Zhangjiang

A Microsoft 365 migration project in Zhangjiang looks simple on a spreadsheet and rarely stays that way. The first question is the one nobody asks outside China: the global Microsoft tenant, or the local 21Vianet service? From there it becomes a design exercise — keeping mail flowing, Teams history intact, and an audit trail your head office can actually read.

For foreign-owned companies in Zhangjiang we take the whole journey: audit, then tenant and licence design, then cutover, then the settling-in weeks when the odd fault surfaces. The aim is a migration nobody has to talk about afterwards.

Why Microsoft 365 migration in Zhangjiang is not like migrating anywhere else

People assume the global tenant and the China service differ only in where the servers sit. They don’t: licensing, feature behaviour and routing all vary, and performance is a function of how your traffic reaches Microsoft’s network. Layer the compliance question on top — what you may store where, and what you can demonstrate — and you have a design problem rather than a copy operation.

We audit before anyone touches a mailbox: licence entitlements, domains and DNS, mail flow rules, Teams and SharePoint usage, identity configuration, and which devices are enrolled where. Most migrations take a few weeks from audit to cutover.

The scope we move

• User and shared mailboxes, plus the mail-flow rules around them
• Teams and channels, carrying chat history across where the move supports it
• SharePoint and OneDrive content, with permissions verified on both sides
• Identity — Entra ID, groups, authentication and conditional access
• Devices and policy, including Intune enrolment
• Domains, DNS records and the licensing picture on the destination tenant

Mailboxes go first and collaboration content follows, so the team keeps working while the rest of the estate catches up.

How a migration runs

1. Audit the current tenant and the actual business requirements
2. Design the destination — tenant choice, licensing, routing
3. Run a pilot group and record what actually changes for users
4. Cut over in a planned window; we schedule it outside business hours
5. Hypercare — we stay on for hypercare, while the small faults surface
6. Hand over documentation, and support what we left behind

Where we work

We are not a single-city provider. NETK5 dispatches engineers across mainland China: our own team is based in Shanghai, Beijing, Guangzhou and Hong Kong, and we staff projects elsewhere in the country as clients need them — Xi’an, Chengdu, Taixing and beyond. Outside China we have delivered rack-and-stack work and WiFi surveys in Japan, Korea, Singapore and Taiwan, usually for international companies coordinating several sites from a head office that has never been on site.

For Microsoft 365 migration in Zhangjiang that matters in a practical way: work can be planned around a visit rather than a relocation, and the same team that surveys or installs can hand over documentation the head office can actually use.

Where we have done this before

Since 2002 we have looked after IT for international companies in China, and Microsoft 365 sits at the centre of most of it. We have run a pilot migration of Microsoft 365 from the global tenant to 21Vianet for a client operating in China, and we manage cloud estates day to day — including an environment of more than thirty Azure virtual machines with Microsoft 365 alongside it. Our clients include names such as Siemens, Nestlé, McKinsey and JLL, usually alongside the international IT companies whose client sites we support.

Questions we get asked

Do we have to move to 21Vianet if we are in China?

No. Plenty of foreign-owned companies run on the global tenant and it works. The trade-offs are performance, routing, and how comfortably you can evidence data handling. Some migrations go the other way — from 21Vianet back to global — when a company restructures or leaves. The right answer depends on your users, your regulator and your head office, which is why the audit comes first.

How long are users without email?

Very little, if the cutover is planned properly: mail flow flips inside a window, users sign in again, work resumes. The time goes into the days afterwards — profiles, devices, shared mailboxes, and the odd Teams channel that behaves differently.

Can you support us after the migration?

Yes, and a good share of our migration work becomes ongoing support — helpdesk in English and Chinese, monitoring, and someone who already knows how your tenant was built.

Talk to us about Microsoft 365 migration in Zhangjiang

Tell us what you have now and what you need to end up with — tenant, users, sites, and any deadline driving it. We will tell you what the move involves and what it costs before anyone starts.