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Adomas Svirskas Architectures and Techniques for modern E-business Systems.

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Presentation on theme: "Adomas Svirskas Architectures and Techniques for modern E-business Systems."— Presentation transcript:

1 Adomas Svirskas Architectures and Techniques for modern E-business Systems

2 Adomas Svirskas Architectures and Techniques for modern E-business Systems Agenda E-Business, E-Commerce, C-Commerce E-business Architecture –Integration issues and solutions –E-business Integration Patterns ebXML – the Newest Global Standard –Positioning –Main concepts –State of the Art Quality of Business Service

3 Adomas Svirskas Architectures and Techniques for modern E-business Systems E-Business and E-Commerce The two concepts do not mean the same They are often confused E-commerce is a part of E-business along with: –Infrastructure –Customer Relationship Management (CRM) –Business Intelligence –Supply Chain Management

4 Adomas Svirskas Architectures and Techniques for modern E-business Systems E-Business and E-Commerce E-commerce, or electronic commerce, is conducting business communications and transactions via computers and over networks. It is buying and selling of goods and services through digital communication. E-commerce also includes transactions on the World Wide Web and Internet, and modes such as electronic funds transfer, smart cards, and digital cash. Introduced around 1994 (Amazon.com). E-business, or electronic business, derived (the term) from 'e- commerce'. It is conducting business on the Internet, but not just buying and selling but also servicing customers and collaborating with business partners. The term conveys that the business conducts its business entirely online. Introduced around 1997 (IBM).

5 Adomas Svirskas Architectures and Techniques for modern E-business Systems E-business Systems Evolution Proprietary corporate solutions EDI – E-business for the big Ad-hoc solutions using the Internet The XML promise and reality The need for E-business standards ebXML – the latest focal point of E- business standardisation efforts

6 Adomas Svirskas Architectures and Techniques for modern E-business Systems Collaborative Commerce Opening-up ERP systems and business application of SMEs Integrating them into multi-enterprise collaborative commerce framework Interaction between businesses independent on size and geographical location

7 Adomas Svirskas Architectures and Techniques for modern E-business Systems It is All about Integration The High-Level Goals: –Independence of business operations from underlying technology –Flexibility –Ease of access for businesses of various size –Cost effectiveness –Investment protection

8 Adomas Svirskas Architectures and Techniques for modern E-business Systems Types of Integration (scope) With regard to integration scope there are two major classes: –Enterprise Application Integration – EAI Typically occurs within an enterprise Known as Application-to-Application – A2A –Business-to-Business Integration – B2Bi Typically used for inter-enterprise integration Known as Extended Enterprise

9 Adomas Svirskas Architectures and Techniques for modern E-business Systems Types of Integration (technology) Application Tiers –Business Process –Presentation –Application –Database Integration Middleware –Component frameworks J2EE,.NET, CORBA –Message Queuing JMS, MQSeries –Application Servers –Web Services –EDI –XML Vocabularies

10 Adomas Svirskas Architectures and Techniques for modern E-business Systems Business Process Integration From Commercial Products: TIBCO Vitria BEA Sybase Oracle...

11 Adomas Svirskas Architectures and Techniques for modern E-business Systems E-business Integration Patterns Mentioned positioning of Integration types theoretically yields 3D classification matrix Not all combinations are equally viable Most frequently used proven approaches are referred to as patterns IBM did a good job describing E-business patterns

12 Adomas Svirskas Architectures and Techniques for modern E-business Systems E-business Integration Patterns The document exchange pattern The exposed applications pattern The exposed business services pattern The managed public processes pattern The managed public and private processes pattern

13 Adomas Svirskas Architectures and Techniques for modern E-business Systems Document Exchange Pattern

14 Adomas Svirskas Architectures and Techniques for modern E-business Systems Document Exchange Pattern Suited for partners replacing papers by electronic data interchange Data formats and communication channels must be agreed by partners Tight coupling between external and internal processes Typically batched processing – classic EDI

15 Adomas Svirskas Architectures and Techniques for modern E-business Systems Exposed Application Pattern

16 Adomas Svirskas Architectures and Techniques for modern E-business Systems Exposed Application Pattern Application tier exposed directly to the outside world Message Queuing or Component Framework as middleware Direct coupling among partner applications leads to poor flexibility

17 Adomas Svirskas Architectures and Techniques for modern E-business Systems Exposed Business Services Pattern

18 Adomas Svirskas Architectures and Techniques for modern E-business Systems Exposed Business Services Pattern A layer between the backend enterprise system and partner tier This layer exposes an e-business oriented interface Business service interface to be agreed by partners Web Services technology is an example

19 Adomas Svirskas Architectures and Techniques for modern E-business Systems Managed Public Process Pattern

20 Adomas Svirskas Architectures and Techniques for modern E-business Systems Managed Public Process Pattern Private and Public processes are separated more strictly Public processes are identified, analysed and formally described Integration occurs at Business Process level RosettaNet is an example Trading Partner Agreements TPA

21 Adomas Svirskas Architectures and Techniques for modern E-business Systems Managed Private/Public Process

22 Adomas Svirskas Architectures and Techniques for modern E-business Systems Managed Private/Public Process Unified management environment for public and private processes An ambitious effort, requires redesigning of internal applications to externalise the business process state and the process flow logic

23 Adomas Svirskas Architectures and Techniques for modern E-business Systems Layered E-business Architecture Business Modelling Layer Integration Layer –Business Integration Layer –Services Integration Layer Infrastructure Layer

24 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Framework A framework of specifications for E-business integration based on state-of-the-art software architecture concepts and on experience in development of E-business systems E-business interactions between organizations are modelled, standardised and published via E-business registries The use of XML-based, declarative specification languages provides configurability and interoperability Architectural separation of business and information technology aspects of e-business systems

25 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML and Integration Patterns ebXML is intended to support managed public processes pattern: –Various middleware types are supported –Focus on E-business application rather application integration –Declarative definition of public business processes –Support of partner agreements

26 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Modelling Methodology

27 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Business Operational View The BOV Addresses: The semantics of business data in transactions and associated data interchanges The architecture for business transactions, including: Operational conventions Agreements and arrangements Mutual obligations and requirements

28 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Functional Services View The FSV Addresses: Functional capabilities Business Service Interfaces Protocols and Messaging Services

29 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Framework cont‘d Business Process Specification Schema (BPSS) is an XML-based specification language that formally defines "public" business processes. It focuses on the collaboration of trading partners, and the business transaction activities they perform in the context of those collaborations.

30 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Framework cont‘d Core Components: Those provide the business information that is encoded in business documents that are exchanged between business partners. Registry/Repository: This is useful for more than merely conducting business searches. Some business scenarios depend heavily on registries to support setting up business relationships.

31 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Framework cont‘d Collaboration Protocol Profiles (CPP) and Agreements (CPA): These are XML documents that encode a party's e-business capabilities or two parties' e-business agreements, respectively. Transport, Routing and Packaging: The ebXML messaging services provide an elegant general-purpose messaging mechanism. The ebXML messaging service is layered over SOAP (Simple Object Access Protocol) and can transport arbitrary types of business content.

32 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML Business Scenario

33 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML State of the Art Started in November 1999 sponsored by OASIS and UN/CEFACT Framework specifications delivered in May 2001 Steady adoption by commercial vendors, government organisations and Open Source community

34 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML State of the Art cont‘d ebXML in production –www.steel24-7.com –www.papinet.org –HL7 ebXML pilots –Sun Microsystems with Sabre –Sun Microsystems with GM –US CDC – –British Telecom

35 Adomas Svirskas Architectures and Techniques for modern E-business Systems ebXML State of the Art cont‘d Not all the parts of the framework are adopted equally ebXML Messaging gets most of the attention Core Components are of wide interest Full-scale support of business process modelling and run-time interpretation is still to come

36 Adomas Svirskas Architectures and Techniques for modern E-business Systems Towards Quality of Service Integration-level QoS Business-level QoS Service Level Agreements Research directions

37 Adomas Svirskas Architectures and Techniques for modern E-business Systems Integration-level QoS Collective measure of the level of service a provider delivers to its customers or subscribers –Availability (downtime) –Response time and throughput –Abandoned transactions –Speed of fault detection and correction –...

38 Adomas Svirskas Architectures and Techniques for modern E-business Systems Business-level QoS Based on business metrics and profit models –A simple profit model: Time= W - the response time constraint Revenue= r * (number of completed transactions) Cost= c * (number of responses longer than W) Profit= Revenue - cost Closely related to the integration-level QoS via profit-oriented feedback control

39 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLA – Main Aspects Legal: Provides for the negotiations between customer and service provider Operational: Provides for the execution of the services under the SLA Financial: Provides an assessment of the financial implications in the SLA

40 Adomas Svirskas Architectures and Techniques for modern E-business Systems Research Directions Modelling of inter-relation between the integration-level and business-level QoS Monitoring, measurement and management of business processes based on QoS levels Instrumenting of the above in ebXML or similar environment Implementing in practice

41 Adomas Svirskas Architectures and Techniques for modern E-business Systems Related Work Integration-level QoS and BP management SLA specification language

42 Adomas Svirskas Architectures and Techniques for modern E-business Systems Q2B (QoS to Biz) Framework Developed by HP Labs, 2001 Intended to: –Monitor and correlate QoS with business metrics –Visualise results –Issue alerts according to defined thresholds –Adapt and optimise business processes based on the

43 Adomas Svirskas Architectures and Techniques for modern E-business Systems Q2B (QoS to Biz) Framework Key points of importance for us: –SOA based approach – HP e-speak middleware, similar to Web Services –Conceptual similarity to RBVO – federated e- services –Non-intrusive interceptor based monitoring –XML-based data exchange

44 Adomas Svirskas Architectures and Techniques for modern E-business Systems Q2B - Monitoring of QoS From HPL , HP Laboratories

45 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLAng – an SLA Language Developed by Department of Computer Science, University College London Part of an EU IST project

46 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLAng Goals Producing a formal language, with a well defined syntax and semantics for describing service level specifications (SLSs) Specification of non functional features (service level) of contracts between independent parties to allow the integration with the functional design of a distributed component system Parameterisation, compositionality, validation of service level agreements

47 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLAng Positioning

48 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLAng - SLA structure

49 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLAng - SLA Classification

50 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLAng - SLA Classification

51 Adomas Svirskas Architectures and Techniques for modern E-business Systems SLAng Importance Modelling and reasoning about SLAs Translating an SLA into another format (XML-based) Monitoring compliance to SLA Toolkit for service composition and analysis (assist ASP in determining what SLSs they can undertake to meet)

52 Adomas Svirskas Architectures and Techniques for modern E-business Systems Conclusions Significant standardisation effort is being carried out in E-Business area Collaborative commerce is supported by promising architectural frameworks Quality of Business Services becomes more and more important Questions, comments: Adomas Svirskas Bob Roberts


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