Here are some links on important technical concepts of Liferay – Part 1. Hope this is helpful to all using and learning Liferay.

• Clustering: Liferay DXP Clustering – Liferay Help Center
• Upgrade: Upgrade Basics — Liferay Learn
• LXC: Liferay Experience Cloud – Liferay Help Center
• Search: Search Overview — Liferay Learn
• Architecture: Introduction to Architecture – Liferay Help Center
• UI frameworks: Creating a User Interface – Liferay Help Center
• Certifications: Learning | Liferay
• Remote Apps: Remote Applications UI Reference — Liferay Learn Remote Apps: How to use Liferay 7.4 new feature? – Liferay
• Headless: Headless Delivery — Liferay Learn
• Publications: Creating and Managing Publications — Liferay Learn
• Client Extensions: Client Extensions — Liferay Learn
• Workflow & Process: Process Automation — Liferay Learn
• portal-ext.properties: Portal Properties — Liferay Learn
• system.properties: System Properties — Liferay Learn
• Customizations: Liferay Customization – Liferay Help Center
• Server Administration: Server Administration – Liferay Help Center
• Objects & Low code: Objects — Liferay Learn