Dear Aspirant,

You can not get into an MBA course if you are desired one, straight after your Btech as the MBA requirement are minimum 3 years for almost all the universities outside India. So if you are aiming for MBA programme, then first join a good company and get experience of 3 years minimum. Then apply for GMAT. This is the exam which will enable you to get admissions in various universities all across the globe.

Hope this helps. Here is a link to details of GMAT:

https://www.careers360.com/exams/gmat

Thank you.