# 7.2 Why Cardano?
After evaluating multiple public blockchains (Ethereum, Polygon, Solana, etc.), Cardano was chosen based on the following perspectives.
Evaluation axisCardanoEthereumPolygon
Transaction Fee

◎ Stable/

Low Cost

× Volatile/

Tend to rise

◯ Relatively Stable
Scalability

◎ High Through

Put with POS

△ Currently Limited◯ Moderate Response
Native Token Support◎ No Smart Contract Required

× ERC-20

Required

× ERC-based

dependency

Security and formal validation

◎ Adopting

Formal Methods

(Plutus)

△ Solidity-

Based

△ Same as above
RWA/NFT suitability

◎ Lightweight &

transparent

issuance/

trading

◯ Many Projects

implemented

◯ Fast but with risk of congestion
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