Update cloud.md

Author: oblomov-dev

docs/advanced/technical/cloud.md

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-# Cloud Readiness:
+# abap2UI5 Cloud Readiness
+
+## What is ABAP Cloud and Cloud Readiness?
+
+**ABAP Cloud** is SAP's strategic development model for building modern, cloud-native applications and extensions on the SAP Business Technology Platform (BTP) and in S/4HANA Cloud environments. It is based on a restricted ABAP language scope and mandates the use of **released APIs** only. This model follows the **Clean Core** principle, aiming to decouple extensions from the SAP core to ensure long-term upgrade compatibility.
+
+**Cloud Readiness** means that an ABAP project:
+
+- Uses only released SAP APIs (released objects)  
+- Complies with the restricted **ABAP for Cloud Development** language scope  
+- Avoids unauthorized modifications or direct access to SAP core tables  
+- Is managed via abapGit or Git-compatible workflows  
+- Can run on Steampunk (standalone) or Embedded Steampunk systems (e.g., S/4HANA Cloud Public Edition)
+
+## Why is abap2UI5 Cloud Ready?
+
+**abap2UI5** fully meets the requirements of a cloud-compliant ABAP project:
+
+- It is written entirely using **ABAP for Cloud Development**, with no use of restricted language features or unreleased objects.  
+- It only relies on internally defined classes or released APIs.  
+- The complete codebase is managed through **abapGit** and can be imported into Steampunk systems.  
+- It requires no core modifications, making it fully **Clean Core compliant**.  
+- UI5 apps are based on a static, generic frontend, while all logic and UI behavior is driven from the ABAP backend.
+
+> ✅ **Conclusion**: abap2UI5 is cloud-ready, clean-core compliant, and supports modern, upgrade-safe development practices.
+