What is the difference is between the Pre-paid billing WHMCS module and the Post-paid billing WHMCS module for SolusVM 2 ?

Question

What is the difference is between the Pre-paid billing WHMCS module and the Post-paid billing WHMCS  module for SolusVM 2 ?

Answer

WHMCS module solusvmvps with prepaid billing model is developed by us. And WHMCS addon with post-paid billing method is developed by WHMCS.
The difference between the two billing method is:

• Prepaid billing
  Customers pay in advance for the services you provide. The payment is monthly, recurrent, and fixed. It doesn’t depend on the amount of actually consumed resources (within the selected offer).
• Postpaid billing
  Customers pay only after the services were provided. Customers can pay per hour of actually consumed resources (hourly billing) or they can pay a fixed monthly price (monthly billing).

For more information please refer to these links:

Billing-integration-guide  
Postpaid-billing/overview 
Billing-integration-guide/prepaid-billing/overview/