## Overview

This is the 0.2 documentation set for Keystone Gateway. Start with the [product overview](https://portal.cjcit.io/knowledge-base/keystone_gateway/) for a summary of what the Gateway does, or use the sections below.

## Sections

<table><caption class="sr-only">Sections</caption><thead><tr><th scope="col">Section</th><th scope="col">Contents</th></tr></thead><tbody><tr><td>Getting started</td><td><a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/getting-started/prerequisites/">Prerequisites</a> and <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/getting-started/licensing/">licensing</a></td></tr><tr><td>Deployment</td><td><a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/deployment/standalone/">Standalone</a>, <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/deployment/active-standby/">Active/Standby</a>, <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/deployment/stable-endpoint/">stable client endpoint</a>, and <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/deployment/air-gapped/">air-gapped</a></td></tr><tr><td>Configuration</td><td><a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/configuration/reference/">Configuration reference</a> and <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/configuration/examples/">examples</a></td></tr><tr><td>Operations</td><td><a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/operations/health-and-readiness/">Health and readiness</a>, <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/operations/observability/">observability</a>, <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/operations/offline-reporting/">offline reporting</a>, <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/operations/backup-and-recovery/">backup and recovery</a>, <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/operations/upgrade/">upgrade</a>, and <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/operations/license-renewal/">license renewal</a></td></tr><tr><td>Integrations</td><td><a href="https://portal.cjcit.io/knowledge-base/collector/">PHOCOL</a> and <a href="https://portal.cjcit.io/knowledge-base/lmc_exporter/">LMC Exporter</a></td></tr><tr><td>Security</td><td><a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/security/deployment-security/">Deployment security</a></td></tr><tr><td>Reference</td><td><a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/reference/architecture-and-terminology/">Architecture and terminology</a>, <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/reference/api/">API</a>, and <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/reference/cli/">CLI</a></td></tr><tr><td>Troubleshooting</td><td><a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/troubleshooting/">Troubleshooting</a> and <a href="https://portal.cjcit.io/knowledge-base/keystone_gateway/0.2/troubleshooting/diagnostics/">diagnostics</a></td></tr></tbody></table>