It’s no secret that cryptocurrency has a scaling issue, so we look at various ways either proof-of-work or proof-of-stake could be effective.
Source: https://cointelegraph.com/news/proof-of-work-vs-proof-of-stake-for-scaling-blockchains
Proof-of-Work vs. Proof-of-Stake for Scaling Blockchains
June 23, 2020
CoinTelegraph