How will Avast protect me form zero days

Whats avast thinking about zero day malware, and what protect med from zero days. i know there is a behevior but its relly bad

Whats avast thinking about zero day malware....
To see what they are thinking...Follow avast blog ;)

https://blog.avast.com/

Why? What’s wrong with behavior shield?
There are generic signatures, heuristics, autosandboxing.
Next version would have, as far we know, cloud analysis.
What’s wrong?