Gas optimization is about lowering the fees we pay as users for executing transactions or smart contracts on blockchain networks like Ethereum. Every transaction executed on a blockchain utilizes a resource called gas which we must pay to execute our transaction (as a transaction fee) In order to lower the fees we pay to execute transactions, developers are focusing on creating cleaner and more efficient code; they will begin implementing best practices that help to minimize gas cost such as: using less storage during contract execution, not performing unnecessary calculations, or arranging/organizing the data elements within contract in a way to minimize the number of executions of the contract.
The total reduction of gas costs from even minor improvements can be large enough to account for very large application transaction volume; therefore, gas optimization is an effective means of improving application performance, and many of the changes introduced through gas optimization will enhance a user’s overall experience by reducing the fees associated with executing transactions and supporting long-term scalability solutions for future blockchain applications.