R/3 data out to MDM

Hi,

i´m still a newbie on NetWeaver....

For my Scenario I want to send data from a R/3 System to MDM but without XI. But i don´t know which interfaces i could use to send datas form R/3 directly to MDM. I read something about Java API, Com API and ABAP API.... But i´m not sure if i´m on the right way 😕

What interfaces could i use for this Scenario and what is the best interface?

Thank you