BitDefender Internet Security 2017 vs lifetime

Feb 20, 2015

I'm looking to buy an anti-virus scanner. Now I've been doubting between BitDefender and Kaspersky. I was googling them and I've noticed a deal for Bitdefender; 70€ for a lifetime for 1 pc.

What does "lifetime" mean? Is it really a onetime purchase and never pay anything again for the virusscan? And if so, does the program get updates?

For example:
Let's say I bought the lifetime edition(in 2017). BitDefender 2018 comes out, will I get the same update as the 2018 version?

Thanks in advance