SAP Ariba optimizes procurement processes primarily through two key capabilities. First, it automates manual and repetitive tasks within the source-to-pay lifecycle, such as purchase requisition creation, purchase order transmission, and invoice matching. This automation reduces processing times, minimizes human error, and allows procurement professionals to focus on strategic activities. Second, its ability to integrate seamlessly with other enterprise solutions, particularly ERP systems like SAP S/4HANA, ensures end-to-end process visibility and data consistency. This integration creates a unified system for procurement, finance, and supply chain operations, eliminating data silos and streamlining workflows.

A. Limiting supplier collaboration requirements: This is incorrect. A core strength of SAP Ariba is the Ariba Network, which is designed to enhance and simplify collaboration with a vast network of suppliers.

B. Increased focus on manual approvals: This is incorrect. SAP Ariba is implemented to reduce manual interventions by using configurable, automated approval workflows based on predefined business rules, thereby accelerating the process.

1. Official Vendor Documentation: SAP Ariba Solutions, "SAP Ariba: A Guide for the C-Suite". This guide frequently emphasizes the value propositions of automation and integration. On page 5, it states, "Automate and accelerate your source-to-pay process with market-leading solutions" and highlights "seamless integration with your back-end systems" as a key benefit for achieving a connected, intelligent process.

2. Official Vendor Documentation: SAP Help Portal, "SAP Ariba Cloud Integration Gateway Overview". The documentation details how SAP Ariba integrates with SAP ERP and SAP S/4HANA to "enable an efficient and automated exchange of documents" (e.g., purchase orders, invoices), which directly supports both automation (C) and integration (D) as core features. (See Section: "What is SAP Ariba Cloud Integration Gateway?").

3. Official Vendor Documentation: SAP Learning Hub, Course ARI110 - SAP Ariba Procurement. Unit 1, Lesson 2, "SAP Ariba Procurement Solutions Overview," describes how the solution automates the procure-to-pay process and integrates with ERP systems to provide a comprehensive and efficient procurement landscape.