On-line Order

Hi,

I'm new to AS software and wanted to get some ideas for a project we're beginning to implement.

What object(s) should be used to generate an online sales order that a customer will be able to review and pay for right away?

Use Case: A customer chooses a service offered by our company from the community portal and proceeds to check-out. The customer is presented with a line-item "shopping cart" showing all the services they’ve chosen with related prices and a total amount due. Customer enters their payment information and makes a full payment.

Thank you,

-Alex