--- title: Learn SAP from the Experts | The SAP PRESS Blog | Winfried Schwarzmann description: Winfried Schwarzmann is a chief development architect at SAP. Since 2011, he has worked as a trainer for agile software engineering (ASE) and has conducted in-house and external SAP training courses and workshops. --- [![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/5%20Things%20to%20Know_%20SAP%20Digital%20Manufacturing%20Course.jpg?width=1000&name=5%20Things%20to%20Know_%20SAP%20Digital%20Manufacturing%20Course.jpg) [Logistics](https://blog.sap-press.com/tag/logistics) | Featured article ## [5 Things to Know: SAP Digital Manufacturing Course](https://blog.sap-press.com/5-things-to-know-sap-digital-manufacturing-course) In this blog post, learn about our upcoming Rheinwerk Course entitled Manufacturing Execution and Analytics with SAP Digital Manufacturing from the course instructor, Lars Brittinger. ![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/5-things-to-know-sap-digital-manufacturing-course) ![Winfried Schwarzmann](https://blog.sap-press.com/hubfs/2217_schwarzmann.jpg) **Winfried Schwarzmann** Winfried Schwarzmann is a chief development architect at SAP. Since 2011, he has worked as a trainer for agile software engineering (ASE) and has conducted in-house and external SAP training courses and workshops. # Blogs by Winfried Schwarzmann [![3 Advanced ABAP Testing Things to Know](https://blog.sap-press.com/hs-fs/hubfs/3%20Advanced%20ABAP%20Testing%20Things%20to%20Know.png?height=600&name=3%20Advanced%20ABAP%20Testing%20Things%20to%20Know.png)](https://blog.sap-press.com/3-advanced-abap-testing-things-to-know) [Programming](https://blog.sap-press.com/tag/programming) ## [3 Advanced ABAP Testing Things to Know](https://blog.sap-press.com/3-advanced-abap-testing-things-to-know) The goal of agile software engineering (ASE) is to continuously improve applications. This includes enhancing functionality, yes, but also the... ![Winfried Schwarzmann](https://blog.sap-press.com/hubfs/2217_schwarzmann.jpg) by [Winfried Schwarzmann](https://blog.sap-press.com/author/winfried-schwarzmann) [Read More](https://blog.sap-press.com/3-advanced-abap-testing-things-to-know) [![Why Are ABAP Test Data Classes Important For Shared Code Ownership?](https://blog.sap-press.com/hs-fs/hubfs/Why%20Are%20ABAP%20Test%20Data%20Classes%20Important%20For%20Shared%20Code%20Ownership.png?height=600&name=Why%20Are%20ABAP%20Test%20Data%20Classes%20Important%20For%20Shared%20Code%20Ownership.png)](https://blog.sap-press.com/why-are-abap-test-data-classes-important-for-shared-code-ownership) [Programming](https://blog.sap-press.com/tag/programming) ## [Why Are ABAP Test Data Classes Important For Shared Code Ownership?](https://blog.sap-press.com/why-are-abap-test-data-classes-important-for-shared-code-ownership) Fluctuation, retirement, and job rotation make it necessary for technical and business knowledge to be handed over to other ABAP developers. ![Winfried Schwarzmann](https://blog.sap-press.com/hubfs/2217_schwarzmann.jpg) by [Winfried Schwarzmann](https://blog.sap-press.com/author/winfried-schwarzmann) [Read More](https://blog.sap-press.com/why-are-abap-test-data-classes-important-for-shared-code-ownership) [![Importance of Packages for Agile ABAP Development](https://blog.sap-press.com/hs-fs/hubfs/Importance%20of%20Packages%20for%20Agile%20ABAP%20Development.png?height=600&name=Importance%20of%20Packages%20for%20Agile%20ABAP%20Development.png)](https://blog.sap-press.com/importance-of-packages-for-agile-abap-development) [Programming](https://blog.sap-press.com/tag/programming) ## [Importance of Packages for Agile ABAP Development](https://blog.sap-press.com/importance-of-packages-for-agile-abap-development) In the course of writing the Parallel Processing with ABAP Objects E-Bite, it turned out that the sample application I created also serves as an... ![Winfried Schwarzmann](https://blog.sap-press.com/hubfs/2217_schwarzmann.jpg) by [Winfried Schwarzmann](https://blog.sap-press.com/author/winfried-schwarzmann) [Read More](https://blog.sap-press.com/importance-of-packages-for-agile-abap-development) [![How Does Test-Driven Development Simplify ABAP Programming?](https://blog.sap-press.com/hs-fs/hubfs/How%20Does%20Test-Driven%20Development%20Simplify%20ABAP%20Programming.png?height=600&name=How%20Does%20Test-Driven%20Development%20Simplify%20ABAP%20Programming.png)](https://blog.sap-press.com/how-does-test-driven-development-simplify-abap-programming) [Programming](https://blog.sap-press.com/tag/programming) ## [How Does Test-Driven Development Simplify ABAP Programming?](https://blog.sap-press.com/how-does-test-driven-development-simplify-abap-programming) Product code without tests is not good, and unclean tests are not good either. They may satisfy test coverage KPIs, but they are hard to use and... ![Winfried Schwarzmann](https://blog.sap-press.com/hubfs/2217_schwarzmann.jpg) by [Winfried Schwarzmann](https://blog.sap-press.com/author/winfried-schwarzmann) [Read More](https://blog.sap-press.com/how-does-test-driven-development-simplify-abap-programming) ### 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) - [Human Resources](https://blog.sap-press.com/tag/human-resources) - [Video](https://blog.sap-press.com/tag/video) **Subscribe to our blog!**Get notified about future blog updates. - - - - - ### Most Popular Blog Posts 1. 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