Questions about HANA Cloud development and sales

Greetings,

My name is Heber, I'm an ABAP consultant from Brazil and I have some questions about HANA plataform possibilities.

I'm reading a lot of documentation about SAP HANA Cloud Plataform but yet have some doubts.

- What exactly I need to develop and sell HANA applications?

- What are the sales methods?

- Who can buy these applications?

- If I develop a cloud application, the buyer need to have a HANA system of his own to use it or his data will always be stored in my cloud HANA database?

Thanks in advance,

Heber Fabiano