I would also like to know this as staking is quite attractive and lots of projects offer staking options.
What is staking?
Unlike POW (proof of work) where you need to use expensive hardware and processor's power and obviously electricity for consensus mechanism, in POS (Proof of stake) everyone can hold coin in their wallet or run a node to be a part of mining (consensus mechanism), AGATE use POS and everyone can participate on it, below image will give you a better view of who it works.
for more information refer to Agate whitepaper or read this external article : https://hackernoon.com/consensus-mechanisms-explained-pow-vs-pos-89951c66ae10
https://www.bitcoinnews.ch/8846/proof-of-work-versus-proof-of-stake-why-agate-chose-to-implement-the-latter/
good short decription of POS and POW, thank you!