In the beginning, mainnet.optimism.io was just a domain alias. All the actual infrastructure was handled by QuickNode. This let us focus on developing the core protocol without worrying about how users could access the network. As we grew, we realized we needed more than a simple domain alias

Optimistic rollups are rapidly gaining maturity. As we move beyond the “zero to one” phase, the name of the game is optimization–and the most tangible optimization is cost. Within the next month we will be decreasing fees 30–40% by deploying the first ever system-wide calldata compression on any