# ZKPASS OVERVIEW

- [Architecture](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/architecture.md): To address the limitations of the client-based proof system architecture, we introduce zkPass, a service-based proof system operating as a Proof-as-a-Service platform.
- [zkPass Components](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/zkpass-components.md): The zkPass is a cloud-based infrastructure composed of three main components: zkPass Service, zkPass Modules, and zkPass Client Library.
- [Trust Models](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/trust-models.md): The zkPass Service employs different trust models with regard to data privacy, data integrity, and computation integrity.
- [Deployment](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/deployment.md)
- [Public-Cloud Hosting](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/deployment/public-cloud-hosting.md)
- [Private-Cloud Hosting](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/deployment/private-cloud-hosting.md)
- [On-Premise Hosting](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/deployment/on-premise-hosting.md)
- [SDK Objectives](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/sdk-objectives.md)
- [API Key](https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/zkpass-overview/api-key.md)


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