The Definitive Guide to ABAP Cloud & Clean Core Extensibility

The Definitive Architecture Playbook for Modern SAP S/4HANA and SAP BTP Engineering

Are you an enterprise architect, development lead, or senior ABAP developer preparing for the massive transition to SAP S/4HANA and SAP BTP? The era of classic monolithic modifications in SE80, direct table updates, and procedural user exits is permanently over. The future of enterprise agility demands a Clean Core.

Authored by Andrea Antonio Perrelli, a recognized Enterprise SAP Solution Architect holding over 10x Official SAP Certifications, this comprehensive engineering guide provides an uncompromising, production-grade roadmap to mastering ABAP Cloud across both Public Cloud, Private Cloud, On-Premise, and SAP BTP environments.

What You Will Master Inside This Enterprise Edition:

• The Clean Core Imperative: How to transition from technical debt and "Upgrade Freezes" to guaranteed Zero Downtime Upgrades using the 3-Tier Extensibility Model and the Clean Core Maturity Model (Levels A-D).
• Classic Steampunk vs. Embedded Steampunk: In-depth architectural comparison of physical and logical topologies, isolated PaaS runtimes on BTP, and in-process developer extensibility co-located on S/4HANA.
• Modern Eclipse ADT Tooling: Moving beyond SE80 with continuous integration, distributed cloud debugging, if_oo_adt_classrun, abapGit, and gCTS.
• Expressive ABAP Cloud Syntax: Functional constructor operators (VALUE, CORRESPONDING, COND, SWITCH, REDUCE), type inference, immutable declarations with FINAL, and formal enumerations.
• High-Performance Data Modeling: Core Data Services (CDS) View Entities V2, Code Push-Down principles, associations, compositions, and database-enforced row-level security with Data Control Language (DCL).
• Modern ABAP SQL & AMDP: Common Table Expressions (CTE), Window Functions (DENSE_RANK), and native SAP HANA SQLScript procedures.
• The RAP Framework (RESTful Application Programming): Managed vs. Unmanaged scenarios, automated Draft Handling, determinations, validations, actions, and the Entity Manipulation Language (EML).
• End-to-End OData & Event-Driven Decoupling: Service Definitions, Service Bindings (OData V4), Identity & Access Management (IAM), Fiori Elements, outbound REST consumption, and SAP Event Mesh with CloudEvents 1.0.
• Quality & Automated Testing: Pure unit testing with ABAP Unit, mocking databases via the CDS Test Double Framework, and asynchronous background execution with Application Jobs.

Rich Visual & Technical Content:

Unlike abstract theoretical manuals, this book contains 40 high-resolution architectural diagrams (including official SAP BTP Solution Diagrams) and 61 fully verified production code snippets rendered in high-contrast syntax highlighting.

Transform your team's development practice and build cloud-native, upgrade-proof enterprise solutions today!