Zcash was issued with a goal to introduce privacy in blockchain transactions. It hides transaction details and ensures the privacy of its users by leveraging the zk-SNARKS protocol (based on zero-knowledge proof).
Unlike bitcoin which takes 10 minutes to generate a block, ZCash can do it in 2.5 minutes.
From "
Zcash: all you need to know"
Do you think Zcash is undervalued?
Judging by the fact that the huge hype led to the fact that the ZCash rate soared and overtook Bitcoin and 1 ZEC coin was sold for several BTC, I can assume that it is really undervalued