Guild is an infrastructure platform for managing access and memberships across multiple platforms using both on-chain and off-chain requirements. Initially designed to connect Ethereum with Discord, Telegram, Twitter, Google Workspace, and GitHub, supporting over 25 blockchains. Guild allows communities to create roles and rewards based on criteria such as token holdings or social activities, facilitating seamless, interoperable access across applications. It aims to reduce transition costs between platforms and enhance community fluidity and interaction.