What is the difference between XSGD VS Paynow/Paylah transaction?

Quoting PayNow Singapore, PayNow allows users to send and receive Singapore Dollar funds from one bank or e-wallet account to another in Singapore through FAST by using just their mobile number

XSGD is a blockchain based e-money or stablecoin that allows users to interact with the blockchain it exists in, such as in DeFi (Decentralised Finance), NFTs (Non-Fungible Tokens) and / or possibilities that we have yet to imagine that the technology blockchain has made possible just like how we have today emails, online shopping, video and music streaming that was made possible by the advent of the Internet

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Case in point, DeFi platforms and NFTs is only made possible by blockchain technology

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More specifically, PayNow has a specific purpose as quoted by PayNow Singapore while XSGD connects users to the vast possibility of blockchain - also known as web3