Single Global Instance?

[DmytroD_]

Has anyone reached a point where regional requirements influenced the decision to use a separate ServiceNow instance rather than maintaining a single global one?

I'm curious what typically becomes the tipping point. Is it regulatory requirements, operational constraints, data handling policies, or something else entirely?

Would be interested to hear how others approached that decision.

[GlideFather]

ahoy @DmytroD_,

it depends on more details that you haven't shared. But perhaps a domain separation used in a single instance could be the way to go..

Understanding Domain Separation - Basics

[DmytroD_]

Thanks for sharing this.

Domain Separation was one of the approaches that came to mind as well. In your experience, are there particular types of requirements where Domain Separation tends to be a better fit than maintaining separate instances?

[Dr Atul G- LNG · Accepted solution]

Hi @DmytroD_ 

This is one of the more challenging discussions to have. ServiceNow provides Domain Separation, but whether it is the right solution depends on the size of the organization and the specific business requirements.

Domain Separation offers several benefits, but it also introduces additional overhead in terms of administration, maintenance, governance, and process mapping. Because of this, my recommendation is to first have a discussion with the business and understand why they believe separate domains are required.

Some key questions to ask are:

• Are their processes significantly different and unable to align with a common or universal process?
• Are they looking for separate forms, tables, workflows, or configurations?
• Are there concerns around data visibility, security, or access controls?
• Do different business units need complete operational independence?

Once you have answers to these questions, you can evaluate whether Domain Separation is truly necessary. It is important to demonstrate both the benefits that Domain Separation can provide and the ongoing cost and effort required to maintain it. This will help the business make an informed decision based on both functional requirements and long-term operational considerations.

https://youtu.be/zE__jVZImRQ

https://www.servicenow.com/community/architect-articles/domain-separation-part-3-how-to-structure-do...

[DmytroD_]

Thank you, Atul. This is very helpful.

I particularly liked the distinction between business requirements and technical implementation. One thing I'm still curious about is whether you've seen situations where regulatory or regional requirements ultimately pushed organizations toward separate instances despite the additional overhead of Domain Separation.