Difference between b.tech.and m.tech

M.tech is more concentrated in research than B.tech.

The first and foremost advantage of doing M.Tech is that you get time to think where things are going and how you can control them. Where do you want to go and what is your ultimate destination. You know the mistakes you made in B.Tech thus u can avoid them and improve to recover from them.

The second advantage of doing M.Tech is that you add a value to education and will definitely have benefit in the long run. As we are moving ahead in life our educational qualifications are becoming more and more important. At some point where all other competitors have same technical skills you will be given preference over others because of qualification
Mtech makes you Post Graduate and Btech makes you just a graduate.

The third advantage is that you will get more insight into the subjects as this time you are mature enough to understand the subjects. Usually teachers or professors are better than the ones who taught you in B.Tech and you are more exposed to application.

Majorly PSUs recruit Mtech students and hence GATE exam is important and mandatory to join Mtech courses.
Fees are on higher side as compared to Btech and so are the opportunity which are hummongous.

Majority of Colleges for Phd demand Mtech or equivalent post graduate degree, so Going for Mtech makes huge sense.

For promotion aspects in organization, it is highly recommended to upgrade your skillsets.