> For the complete documentation index, see [llms.txt](https://surf-2.gitbook.io/surfliquid-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://surf-2.gitbook.io/surfliquid-docs/core-infra-zkcross-network.md).

# 🧩 CORE INFRA: zkCross Network

- [Full-Stack DeFi Infrastructure Behind Surf](https://surf-2.gitbook.io/surfliquid-docs/core-infra-zkcross-network/full-stack-defi-infrastructure-behind-surf.md)
- [Battle-Tested Security and Execution](https://surf-2.gitbook.io/surfliquid-docs/core-infra-zkcross-network/battle-tested-security-and-execution.md)
- [Chain Abstraction and Execution Fabric](https://surf-2.gitbook.io/surfliquid-docs/core-infra-zkcross-network/chain-abstraction-and-execution-fabric.md)