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Give me in a nutshell what exactly do we mean by Enterprise Service Architecture, where exactly XI fits into it./

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    Former Member
    Aug 17, 2007 at 08:59 AM

    Hi Anandha!!

    Enterprise Service Architecture (ESA)

    Enterprise Services Architecture (ESA) is SAPs open architecture for adaptive business solutions. ESA creates a gradual path to flexible, service-centric system landscapes and allows a non-disruptive transition of existing applications and architecture for more flexibility and value.

    The fundamental premise of ESA is the abstraction of business activities or events, modelled as enterprise services, from the actual functionality of enterprise applications. Aggregating Web services into business-level enterprise services provides more meaningful building blocks for the task of automating enterprise-scale business scenarios. Enterprise services allow IT organizations to efficiently develop composite applications.

    ESA (now called Enterprise SOA) is SAP view on the SOA concept. There is an extensive section here in SDN on the topic. ESA is the style or a methodology to build applications which reflects SAP's 30 years of experience and latest IT advancements such as webservices. ESA helps you in building Flexible applications which can adopt the changes whenever occured in the market. ESA is SAP's new vision and we can realize this using Netweaver.

    These links have more information



    This blog may give some information


    SOA -

    Read more about SAP and ESA/SOA @

    refer this thread


    Pls Check it out the following url and download the ibm material for ESA Architecture

    system's ESA Adoption Program (ESOA Roadmap) and SAP EA Framework in this way that :

    1. ESA Adoption Program (process) reflects common business/organisational and IT strategy and defines SOA projects in which Solution Architecture and Enterprise Architecture must be build or rebuild.

    In consequence SAP EA Framework is used.

    2. Plan Phase of SAP EA Framework Architecture Development Cycle (ADC) with defined gaps between "to-be" and "as-is" affects Define and Evaluate Phase of ESA Adoption Program by defining details, corrections and new possibilities around services in existing Program.

    Additionally if we have new Building Blocks (eg new components to reuse) SAP EA Framework Repository is changed.

    3. In effect next "New Solution" project is conducted by updated ESA Adoption Program and uses updated SAP EA Framework,


    <b>Pls reward if useful</b>

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  • Aug 17, 2007 at 07:17 AM
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    Former Member
    Aug 17, 2007 at 08:44 AM


    Lothar Schubert discusses how XI can help data quality in ESA (/people/sap.user72/blog/2003/12/14/esa-as-enabler-of-data-quality-assurance)

    XI supports strong de-coupling of the process from back-end systems. De-coupling is a key requirement for an ESA. (esa-and-netweaver)

    Benefits of extracting high-value functions out of existing systems and how XI provides higher level functions for Web Services like (esa-and-netweaver)

    Bottom line, <b>XI is a key component to ensure delivery of messages between enterprise systems in an Enterprise Services Architecture.</b>

    ESA - EAI - Need for a perspective


    Who is going to drive the ESA?


    The Architect's World - Episode 16



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