S4 HANA integration with ECC 6.0 EHP 6

Hi Experts,

I have recently started taking interest in HANA and specially S4 HANA Cloud Edition which is the talk these days, also, simultaneously designing a solution for one of my clients.

The client i currently running on ECC 6.0 EHP 6 version of SAP R/3 and is keen to explore features and value additions provided by S4 HANA Cloud Edition. I now have a challenge in this area...

• Is it possible that through some medium I would be able to connect the two systems and make them to talk to each other so that their data stays in the ECC system while leveraging the S4 HANA Cloud applications/solution base?
• Or may be connect the two system and while they maintain a communication channel, some transitional data is synced to the HANA database while the older data remains on the ECC system?

If yes, request you all to please, kindly point me in the direction of some helpful documentation that can help me with the methodology or at least some theoretical concept around the same.

Any and all the information in this direction would be quite helpful. Looking forward to get some really needed response.

Thanks and Regards,

Abhishek Goel