--- title: Learn SAP from the Experts | The SAP PRESS Blog | Indrajit Roy Chowdhury description: Indrajit Roy Chowdhury is a skilled technology leader with a specialized focus on supply chain management. He thrives at the intersection of technology and business processes. His experience spans various industries, including automotive, consumer electronics, healthcare, and utilities. Indrajit excels in managing projects and programs related to digital supply chain transformation. He serves as a reliable subject matter expert across the supply chain, covering areas like sourcing, material planning, procurement, inventory management, manufacturing, order management, distribution, and warehouse management. He leverages tools and solutions from SAP S/4HANA to SAP Ariba to achieve these goals. --- [![rheinwerk-sappress-logo-header-1](https://blog.sap-press.com/hubfs/rheinwerk-sappress-logo-header-1.svg)](https://blog.sap-press.com/) [Blog](https://blog.sap-press.com) - Books - Get an overview of our books and courses on every relevant SAP topic. - [Programming](https://sap-press.com/programming/) - [Administration](https://sap-press.com/administration/) - [BI](https://sap-press.com/business-intelligence/) - [Finance](https://sap-press.com/finance-controlling/) - [Logistics](https://sap-press.com/logistics/) - [HR](https://sap-press.com/human-resources/) - [CRM & Sales](https://sap-press.com/marketing-sales/) - [HANA](https://sap-press.com/hana/) - [Introductions](https://sap-press.com/introductions/) - [E-Bites](https://sap-press.com/e-bites/) - [Certification Guides](https://www.sap-press.com/certification-guides/) - [Rheinwerk Courses](https://www.sap-press.com/online-courses/) - Book Subscription - Get unlimited access to all SAP PRESS books! - [SAP PRESS Subscription](https://sap-press.com/subscriptions/) ![](https://blog.sap-press.com/hs-fs/hubfs/Exploring%20the%20Architecture%20of%20the%20SAP%20Digital%20Payments%20Add-On.jpg?width=1000&name=Exploring%20the%20Architecture%20of%20the%20SAP%20Digital%20Payments%20Add-On.jpg) [FICO](https://blog.sap-press.com/tag/fico) | Featured article ## [Exploring the Architecture of the SAP Digital Payments Add-On](https://blog.sap-press.com/exploring-the-architecture-of-the-sap-digital-payments-add-on) The SAP digital payments add-on is a cloud-based middleware component hosted on SAP BTP. ![SAP PRESS](https://blog.sap-press.com/hubfs/Twitter_profile_pic.svg) by [SAP PRESS](https://blog.sap-press.com/author/sap-press) [Read More](https://blog.sap-press.com/exploring-the-architecture-of-the-sap-digital-payments-add-on) ![Indrajit Roy Chowdhury](https://blog.sap-press.com/hubfs/IRC%20Prof%20pic.jpg) **Indrajit Roy Chowdhury** Indrajit Roy Chowdhury is a skilled technology leader with a specialized focus on supply chain management. He thrives at the intersection of technology and business processes. His experience spans various industries, including automotive, consumer electronics, healthcare, and utilities. Indrajit excels in managing projects and programs related to digital supply chain transformation. He serves as a reliable subject matter expert across the supply chain, covering areas like sourcing, material planning, procurement, inventory management, manufacturing, order management, distribution, and warehouse management. He leverages tools and solutions from SAP S/4HANA to SAP Ariba to achieve these goals. # Blogs by Indrajit Roy Chowdhury [![SAP Multi-Tier Collaboration and Subcontracting Explained](https://blog.sap-press.com/hs-fs/hubfs/How%20Can%20SAP%20Multi-Tier%20Collaboration%20Be%20Used%20with%20Subcontracting%20Collaboration.png?height=600&name=How%20Can%20SAP%20Multi-Tier%20Collaboration%20Be%20Used%20with%20Subcontracting%20Collaboration.png)](https://blog.sap-press.com/how-can-sap-multi-tier-collaboration-be-used-with-subcontracting-collaboration) [Logistics](https://blog.sap-press.com/tag/logistics) ## [SAP Multi-Tier Collaboration and Subcontracting Explained](https://blog.sap-press.com/how-can-sap-multi-tier-collaboration-be-used-with-subcontracting-collaboration) Multi-tier collaboration is a business model that allows collaboration with multiple suppliers or business partners in real time. ![Indrajit Roy Chowdhury](https://blog.sap-press.com/hubfs/IRC%20Prof%20pic.jpg) by [Indrajit Roy Chowdhury](https://blog.sap-press.com/author/indrajit-roy-chowdhury) [Read More](https://blog.sap-press.com/how-can-sap-multi-tier-collaboration-be-used-with-subcontracting-collaboration) ### SAP Blog Topics - [All SAP Topics](https://blog.sap-press.com) - [Logistics](https://blog.sap-press.com/tag/logistics) - [Programming](https://blog.sap-press.com/tag/programming) - [FICO](https://blog.sap-press.com/tag/fico) - [Administration](https://blog.sap-press.com/tag/administration) - [Featured](https://blog.sap-press.com/tag/featured) - [Business Intelligence](https://blog.sap-press.com/tag/business-intelligence) - [What Is?](https://blog.sap-press.com/tag/what-is) - [CRM & Sales](https://blog.sap-press.com/tag/crm-sales) - [Video](https://blog.sap-press.com/tag/video) - [Human Resources](https://blog.sap-press.com/tag/human-resources) **Subscribe to our blog!**Get notified about future blog updates. - - - - - ### Most Popular Blog Posts 1. 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[Logistics](https://blog.sap-press.com/tag/logistics) [Batch Determination and Batch Check in SAP S/4HANA](https://blog.sap-press.com/batch-determination-and-batch-check-in-sap-s4hana) by [SAP PRESS](https://blog.sap-press.com/author/sap-press) **Subscribe to our blog!**Get notified about future blog updates. - - - - - ### The official SAP PRESS Blog As the world’s leading SAP publisher, SAP PRESS’ goal is to create resources that will help you accelerate your SAP journey. The SAP PRESS Blog is designed to provide helpful, actionable information on a variety of SAP topics, from SAP ERP to SAP S/4HANA. 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