Is render built on ETH?

Could you please clarify if Render is indeed constructed on the Ethereum blockchain? I'm trying to get a deeper understanding of its technological foundation and how it fits into the larger cryptocurrency ecosystem. I've heard some rumors that it might be utilizing Ethereum's smart contract capabilities, but I'd like to have a more definitive answer. Could you elaborate on the relationship between Render and ETH, if there is one? I'm particularly interested in knowing about any specific advantages or disadvantages this might bring to the platform. Thank you for your time and assistance in clarifying this matter.