Cardano is a blockchain network that was created by Charles Hoskinson, one of the co-founders of Ethereum. The network aims to provide a more secure, sustainable, and scalable platform for creating decentralized applications (dApps) and smart contracts. It has gained significant traction in the DeFi space, thanks to its high throughput and low transaction fees.Polygon, on the other hand, is a Layer 2 scaling solution that was developed to address the scalability issues of Ethereum. The network provides a framework for building and connecting Ethereum-compatible blockchain networks. It has been gaining popularity in the DeFi space due to its low gas fees and fast transaction processing times.