Review on Ethereum by Julien Roy

Ethereum provides a superior means to create smart contracts and decentralized apps, and its utility in the crypto realm cannot be matched. Smart Contracts alter the way we live as humans by establishing a secure agreement, or should I say contract, that cannot be hacked or exploited by a third party.

Ethereum smart contracts may be created on the testnet before being sent to the mainnet. Allowing users to build on a testnet before publishing on the mainnet helped me, as a new developer, to test my product in a real-world setting before putting it on the Ethereum blockchain network.

While doing so on the testnet is simple, transmitting to the mainnet consumes a lot of gas, and given Ethereum's high value, gas costs make for a significant portion of transaction fees.