Here are some key points to consider regarding ServiceNow on-premises deployment:

1. On-Premises Deployment Option: ServiceNow primarily offers a cloud-based Software as a Service (SaaS) solution. However, it also provides an on-premises deployment option for customers who want to host the platform within their own data centers or private clouds.

2. Customization and Control: Hosting ServiceNow on-premises allows organizations to have more control over their ITSM environment. It provides greater flexibility in terms of customization and configuration to meet specific organizational needs.

3. Data Security and Compliance: Some organizations, particularly in highly regulated industries like healthcare or finance, may have strict data security and compliance requirements that necessitate on-premises hosting. This option allows them to maintain full control over their data.

4. Network and Integration: On-premises deployment can offer better integration capabilities with existing on-premises systems and applications. Organizations with complex hybrid IT environments may prefer this option.

5. Performance: Hosting ServiceNow on-premises can provide better performance for certain organizations, especially those with extensive IT operations and large user bases. It allows them to allocate dedicated resources for the platform.

6. Cost Considerations: On-premises deployment typically involves higher initial setup costs, including hardware, infrastructure, and maintenance. Organizations should weigh the cost benefits of on-premises hosting against cloud-based options.

7. Maintenance and Updates: Organizations are responsible for maintaining and updating the ServiceNow instance when hosting it on-premises. This includes applying patches, updates, and security fixes.

8. Scalability: On-premises deployments may require careful planning for scalability. Organizations need to anticipate future growth and ensure that their infrastructure can support it.

9. ServiceNow Support: ServiceNow provides support for on-premises deployments, but organizations should consider the level of support they need and the associated costs.

10. Hybrid Deployments: Some organizations opt for hybrid deployments, where they host certain components of ServiceNow on-premises while using cloud-based services for others. This approach can provide a balance between control and flexibility.

11. Licensing and Contracts: Licensing agreements for on-premises deployments may differ from cloud-based subscriptions. Organizations should carefully review licensing terms and contracts.

12. Backup and Disaster Recovery: Organizations hosting ServiceNow on-premises are responsible for implementing robust backup and disaster recovery strategies to ensure data availability and business continuity.