SDK/BOI to Integrate with Sage 100

SOLVED

hi, I am new to Sage 100. Our company bought Sage100 2018 and installed on our windows server. Right now, my goal is to use .net/java/python/php or any other codes to integrate with Sage 100.

I found one link mentioned (Sage Evolution SDKhttp://developmentzone.pastel.co.za/index.php?title=Downloads). So I have few questions here?

   #1 Is this the right SDK I need to do my task? 

   #2 If yes in #1, how our company buy the Developer Serial Number?

   #3 If no in #1, what options I can have to integrate with Sage 100? Buy the BOI course and use BOI?

Any help will be appreciated.