The SAP Business Technology Platform (BTP) is SAP's strategic platform-as-a-service (PaaS) designed to serve as the foundation for the Intelligent Enterprise. It provides a unified environment for data and analytics, artificial intelligence, application development, automation, and integration. For SAP Cloud ERP (like S/4HANA Cloud), BTP is the designated platform where customers and partners build, manage, and deploy integrations and extensions. This approach maintains a "clean core" for the ERP system, ensuring that customizations do not disrupt standard processes or complicate future upgrades.

A. SAP Discovery Center: This is a service for exploring SAP solutions and estimating project costs. It is a guidance tool, not the technical platform for running extensions.

B. SAP Business Accelerator Hub: This is a central catalog of pre-built integrations, APIs, and business content. It is a repository for discovering assets, not the runtime environment where they operate.

D. SAP ABAP Environment: This is a specific service within the SAP BTP that allows for ABAP-based cloud development. BTP is the overarching foundation that includes this environment and many other services.

1. SAP Official Documentation - SAP Business Technology Platform: "SAP Business Technology Platform (SAP BTP) is the platform for the Intelligent Enterprise. As the technology foundation of SAP’s own applications

it is optimized for SAP workloads. [...] You can achieve agility

business value

and continual innovation through integration

data to value

and extensibility of all SAP and third-party applications and data assets."

Source: SAP Help Portal

"What Is SAP Business Technology Platform (SAP BTP)?".

2. SAP Official Documentation - S/4HANA Cloud Extensibility: The extensibility concept for SAP S/4HANA Cloud is based on a "clean core" principle. Side-by-side extensions are developed on the SAP Business Technology Platform to keep the core system stable and upgradable.

Source: SAP Help Portal

"Extensibility for SAP S/4HANA Cloud"

Section: "Side-by-Side Extensibility".

3. SAP Official Whitepaper - Clean Core for SAP S/4HANA Cloud: "SAP Business Technology Platform (SAP BTP) is the platform of choice for building extensions and innovations around the clean core of SAP S/4HANA Cloud."

Source: SAP Whitepaper

"An Introduction to Clean Core For SAP S/4HANA Cloud

Public Edition"

Page 5.