Ethereum has launched the Dencun upgrade, targeting reduced transaction fees and improved data usage for Layer 2 blockchains, enhancing their appeal for application users. The upgrade introduces 'blobs' to temporarily store data, aiming to cut operational costs significantly. Developers anticipate this upgrade will enable the creation of decentralized applications that were not previously feasible. While the impact may vary across different Layer-2 networks, the upgrade promises to revolutionize the landscape of blockchain-based applications, from games to financial exchanges.