What is jito on Solana?

Could you please elaborate on what "jito" means in the context of Solana? I'm quite interested in understanding its significance and role within this blockchain ecosystem. Is it a tool, a protocol, or perhaps a unique feature? How does it fit into the larger Solana architecture, and what kind of benefits does it offer to users or developers? Could you also provide any insights into its potential impact on the overall performance and scalability of Solana? I'm eager to learn more about this intriguing aspect of the Solana blockchain.