Top 5 Ways to Integrate Multiple ServiceNow Instances

If you’ve ever faced the challenge of integrating two ServiceNow instances, you know it can feel overwhelming. Where do you start? Which method is best? And what are the trade-offs? With limited guidance available in forums and articles, making an informed decision can be tough. 

That’s why we’ve put together this comprehensive guide – to help you explore the available options and choose the right approach based on your specific needs. So, let’s start with understanding what options are available, and then we will go into each of these options and understand which one to consider in different scenarios.

Options for Integrating ServiceNow Instances

1. Instance Data Replication: Helps sync data from an entire table into a table in the target table, e.g. Location Data sync between ITSM and HR Instance for the same organization. 
2. Remote Instance Spoke: Helps export and import a record from one instance to another ServiceNow instance. For example, you have a common instance for all your reporting needs where you extract data from multiple instances, or you want to run two instances in parallel for a period of time, but want the same data.
3. Remote Process Sync: Data can be integrated between two instances while transforming the data as well (which is an overlaying process on it), e.g. Incident record integration, while transforming assignment groups, CI details, Caller, etc.
4. Service Bridge: Service Bridge is a full-grown product provided by ServiceNow to help a company integrate its ServiceNow instance with other customer instances. For example, a financial services firm providing services to other financial services firms, or telecom firms.
5. Custom integration: Not always the first choice, considering how vast ServiceNow products are, but there are times that only a custom integration can support the business needs. For example, companies partnering up, but still having separate ServiceNow instances.

Let’s now understand each one in detail and know which is the right fit in which scenarios, its licensing stance, manageability cost, etc. 

Instance Data Replication

Useability 

1. An optimal solution for replicating an entire table with transformation and mapping capabilities.
2. Can be used for foundational data consistency between multiple instances in the same organization, e.g. ITSM and HR instances to have locations, departments rather than setting up multiple integrations.

Considerations 

1. Cost compared to the ability to build a custom one via a scheduled job and using table APIs.
2. Runs based on schedules and not trigger or event-based. 
3. Requires additional license (always check with your account manager, the licensing model is usually different in each organization).

Remote Instance Sync

Useability 

1. Available as an integration hub spoke with multiple pre-built actions for ITSM-based tables, attachments, Customer cases, etc.
2. Supports ad hoc integrations via Flow Designer.
3. Good option for low transactions or if a few tables are in scope.

Considerations 

1. Requires medium to high-level configurations to set the process up.
2. Requires additional license and Integration Hub transactions (always check with your account manager, the licensing model is usually different in each organization).
3. Dependency on flow executions and remote and local queues, which process records in a FIFO (first-in, first-out) manner. If a record fails/errors, the overall integrations halt, and there is no self-healing process.
4. Does not have a process-oriented lens – it is mostly built for records following similar processes within the same organization. e.g. If you are planning to keep two ServiceNow instances running for a period of time.

Remote Process Sync

Useability 

1. Good solution for integrating multiple tables with a process blanket on it. e.g. Incident created in the supplier instance to be created in the customer instance, transforming fields, applying additional logic, and state management.
2. Flexibility in configuring the solution to cater to business needs.
3. Supports domain separation.

Considerations

1. Requires heavy customizations to set the processes to fully function.
2. Requires additional license and Integration Hub transactions (always check with your account manager, the licensing model is usually different in each organization).
3. Dependency on flow executions and remote and local queues, which process records in a FIFO manner. If a record fails/errors, the overall integrations halt, and there is no self-healing process.
4. Service catalogs do not work with this product. You may have to consider either Service Bridge or a custom solution for publishing catalogs between instances.

Service Bridge

Useability

1. Helps with faster onboarding and provides quick service catalog refreshes to subscribers.
2. Retrieves real-time data from the provider’s instance while using the service catalog for all forms.
3. Works seamlessly, even if the producer and consumer instances are on different versions of ServiceNow.
4. Foundation data sync offering is available out-of-the-box.

Considerations 

1. Requires an additional license for Service Bridge.
2. Complexity and efforts required for setup.
3. The need for robust governance, as changes in the producer instance can cause issues on consumer instances.

Custom Integration Based on Business Need

Useability 

1. Flexibility to create your own design, be it push or pull, frequency, or triggers.
2. No dependency on flows.
3. Domain separation functionality may need to be cooked in.

Considerations 

1. Requires building everything from scratch, integration attachments, service catalogs, etc.
2. Managing custom components during upgrades.
3. Would take up additional custom table count if you plan to stage the records.

Summary

Integrating two ServiceNow instances is a bit like choosing a roommate – you’ll want one that’s reliable, doesn’t cost too much, and won’t break down when things get messy! The best solution is the one that aligns with your business goals, while keeping operations smooth and scalable, but here is a quick summary that may help you make a well-informed decision.

Key Takeaways

• Understand Your Integration Needs First: Before choosing a method, assess your business requirements – whether it’s syncing foundational data, enabling real-time collaboration, or supporting complex workflows.
• There’s No One-Size-Fits-All Solution: ServiceNow offers multiple integration options, each tailored for different use cases, from simple data replication to full-scale process synchronization.
• Licensing and Complexity Vary Widely: Most solutions require additional licensing and come with varying levels of setup complexity. Always consult your ServiceNow account manager before committing.
• Evaluate Based on Flexibility and Scalability: Some methods offer plug-and-play simplicity, while others allow deep customization. Choose based on how much control and adaptability your organization needs.
• Custom Integrations Are Powerful, but Demanding: When standard tools fall short, custom integrations can fill the gap – but they require more effort to build, maintain, and upgrade.
• Decision Support Tools Help Clarify Choices: Use visual comparison charts and decision matrices to simplify the selection process and align stakeholders on the best-fit solution.

And if all else fails? Just blame the integration on “ServiceNow Black Magic” and smile. Works every time!