> For the complete documentation index, see [llms.txt](https://qualitax.gitbook.io/interop/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://qualitax.gitbook.io/interop/requirements/application-layer.md).

# Application Layer

**Focus:** User-facing applications and interfaces.

**Objective:** Provide end-user functionality and experience.

**Description:** This layer focuses on building end-user-facing applications that leverage cross-chain capabilities to deliver functionality, experience and business value. The layer where end-user blockchain applications and interfaces are built. Includes fintech, wallets, exchanges, supply chain, financing, insurance and other decentralized apps leveraging cross-chain capabilities, and any other software that directly interacts with the blockchain on behalf of the user. This layer encompasses the end-user applications and interfaces that interact with the blockchain. It's where users initiate actions, view data, and manage their interactions with the crosschain system. The Application Layer abstracts the complexities of the underlying systems, offering a more accessible entry point for users.

**Layer owner:** Developers, companies building blockchain applications.


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