Binance previously offered a feature called DeFi Wallet, which has been migrated and replaced by a new product called Web3 Wallet. This suggests that Binance does have a presence in the DeFi space, albeit with evolving products and services. Additionally, Binance has demonstrated active involvement in the DeFi sector through various initiatives, such as the release of a DeFi derivatives report and the integration of DeFi protocols into its platform.