Which network is Solana on?

Could you please clarify which network Solana operates on? Is it a standalone blockchain, or does it integrate with other popular blockchain networks in some way? Understanding the network architecture of Solana is crucial for evaluating its potential as a cryptocurrency and for making informed decisions about its use and investment. Additionally, it's essential to consider the scalability, security, and decentralization of the network to fully comprehend the advantages and limitations of Solana.