# Hub and spoke architecture license details

**URL:** <https://forum.inductiveautomation.com/t/hub-and-spoke-architecture-license-details/89617>\
**Category:** Ignition\
**Tags:** vision\
**Created:** [April 29, 2024, 9:11am UTC](https://forum.inductiveautomation.com/t/hub-and-spoke-architecture-license-details/89617 "2024-04-29T09:11:36Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![srinivasan\_s](https://avatars.discourse-cdn.com/v4/letter/s/eb9ed0/32.png) [@srinivasan\_s](https://forum.inductiveautomation.com/u/srinivasan_s)\
**Post date:** [April 29, 2024, 9:11am UTC](https://forum.inductiveautomation.com/t/hub-and-spoke-architecture-license-details/89617/1 "2024-04-29T09:11:36Z")

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I am choosing HUB and spoke architecture for my customer need, So i have central server, and 2 to 3 spoke ignition server running, I have few question regarding licenses and pricing,

 ![HUB](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/2/52b07dc59a97d72c71df5e7d8b62aa5f1b14405e.png)

Also , I purchasing following module :

Ignition Platform  
Vision Module   
SQL Bridge Module  
Tag Historian Module  
Reporting Module  
Alarm Notification Module  
OPC UA Module  
Webdev Module

I have few question regarding licenses and pricing,

1.All purchased module can be used in all HUB and SPOKE server in my network architecture, like it is only one time purchase so we can use for n number of servers?  
2. If no, shall i need to purchase separately for all the single server I am using in HUB and SPOKE architecture.

Kindly give your inputs!

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**Author:** ![bschroeder](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bschroeder/32/13260_2.png) [@bschroeder](https://forum.inductiveautomation.com/u/bschroeder)\
**Post date:** [April 29, 2024, 10:28am UTC](https://forum.inductiveautomation.com/t/hub-and-spoke-architecture-license-details/89617/2 "2024-04-29T10:28:02Z")

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You have to license every gateway instance you create.

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**Author:** ![srinivasan\_s](https://avatars.discourse-cdn.com/v4/letter/s/eb9ed0/32.png) [@srinivasan\_s](https://forum.inductiveautomation.com/u/srinivasan_s)\
**Post date:** [April 29, 2024, 11:07am UTC](https://forum.inductiveautomation.com/t/hub-and-spoke-architecture-license-details/89617/3 "2024-04-29T11:07:20Z")

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Thanks for your reply. What about other modules, Should I have to buy all modules for every gateway I am using? Else module can be purchased once, been use in multiply server?  
I hope Ignition server license and other module license is different !

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [April 29, 2024, 11:46am UTC](https://forum.inductiveautomation.com/t/hub-and-spoke-architecture-license-details/89617/4 "2024-04-29T11:46:22Z")

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> [@srinivasan\_s](#):
>
> Else module can be purchased once, been use in multiply server?

No. Only EAM has a central license for clients. Everything else is paid license per module per gateway.

You generally do not need all the modules in all of the gateways.

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**Author:** ![bschroeder](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bschroeder/32/13260_2.png) [@bschroeder](https://forum.inductiveautomation.com/u/bschroeder)\
**Post date:** [April 29, 2024, 12:15pm UTC](https://forum.inductiveautomation.com/t/hub-and-spoke-architecture-license-details/89617/5 "2024-04-29T12:15:11Z")

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To followup on what @pturmel said, you would be best sitting down with a sales engineer to go over your requirements and they can help you configure things out properly.