Hi Nick Price. Thank you for your question. The differences are:

- A LTD guarantees you pay once and you get access to the platform as long as you want. You should notice there are some restrictions about amount of tenants and tasks executions (according to the tier you pay) when you run Cenit IO in the cloud.
- Monthly plans demands you to pay every month and you will also have restrictions according to the plan you pay.
- Both LTD and Monthly plans allows you to run Cenit IO on premise. When you run Cenit IO on premise the restrictions about tenants amount and task executions don't apply so you have no limits.

If there's something else to clarify, please don't hesitate to ask.

Thank you again.