Aligning Business Processes to SOA

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Aligning Business Processes to SOA

• B. Ramamurthy

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Topics

• Review of architectural roadmap
• Fundamental SOA
• Networked SOA (esp. figures in Ch.6)
• Process oriented SOA
• Lets design an SOA
• Relating business processes and SOA (Chapter 7)
• Demo consuming a web service
• Midterm 90 minutes exam on chapter 1-7 Lets
  decide the date for the exam

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Business Process Management (BPM)

• BPM generally focuses on the strategic and
  operational aspects of process orientation in a
  given business area.
• Mapping BPM model to an enterprise IT landscape
  is a challenging task.
• Business side of BPM are the keywords such as ISO
  9000 and Six Sigma
• IT side of BPM is accompanied by keywords such a
  process modeling and workflow management (see
  Fig. 7.1)

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Activity based costing
EAI
Rules Engine
Web Service
Continuous Process improvement
Six Sigma
Workflow management
B2Bi
Value Chain
ERP
IT Organization
Business Organization
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Business Process Management System (BPMS)

• BPMS provides the technical platform for
  realizing BPM management initiatives.
• BPM engine, facilities for BPM monitoring, design
  tools, and facilities for simulation.
• BPM encompasses the discovery, design, and
  deployment of business processes, as well as
  executive, administrative and supervisory control
  over them to ensure that they remain compliant
  with business objectives SF03
• A BPM software product should enable business
  analysts, software developers, and system
  administrators to model and deploy business
  processes ( at development time) and to interact
  with, monitor and analyze process instances 9at
  run time).
• Lets discuss Modeling and execution architecture
  of BPMS.

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Modeling Languages

• Most are based on work by Petri Rei 92 and
  Milner Mil 80
• Business Process Execution Language for WS
  (BPEL4WS)
• IBMs Web Services Flow Langauge (WSFL)
• Microsofts XLANG
• BPML by SAP, Sun and other vendors.
• BPMN (Business Process Modeling Notation) is a
  language by BPMI is to support standardized,
  graphical representation of business process
  diagrams.
• BPMN is positioned at the interface of business
  and IT.
• UML is within IT
• BPMN aims to become the defacto standard used
  between IT and business to discuss the scope and
  functionality of processes and applications.

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BPM System Architectrure
Design tool
Process engine Interprets VPML, BPEL4WS
Process Manager
Process Instance repository
Process Definition Repository
Deploy configure
Monitor manage
Transaction manager
Connector framework
Middleware
Backend applications
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BPM vision

• BPM vision is strong one
• Instead of hard coding business processes into
  applications, it facilitates modeling,
  modifications, reconfigurations, and optimization
  of process definitions with graphical tools that
  can be used by less technology-oriented business
  analysts.

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BPM Alignment to SOA
BPML
Enterprise Processes
BPMS
Process layer
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BPM and process-enabled SOA

• Data functions ? Objects ?Services
• With SOA we take a deliberate step back from the
  highly complex, fine grained dependent
  distributed object models toward less complex,
  relatively coarse-grained, loosely coupled (ie.
  less independent) component interfaces.

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Core business logic vs. process control logic

• Both these concepts comprise data and
  functionality.
• Examples of core business logic data access
  services, complex calculations, complex business
  rules
• Process control logic are related to non-tangible
  objects in the service industry contract
  management, supply chain management, sales of
  complex products, software outsourcing processes.
• Design implications for architects decomposition
  of SOA should pay attention to the above to the
  above.
• For example, an architect may decide to design
  the core processes in house and buy the rest from
  outside source.

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Discovering services online

• Universal Description, Discovery and Integration
  (UDDI) is a platform-independent, XML-based
  registry for businesses worldwide to list
  themselves on the Internet.
• The information (ex WSDL) discovered is for
  programmatic consumption.
• For manual search for services (WSDL) use
• http//www.esynaps.com/eSynaps_home.aspx
• use this for choosing services in the domain of
  your term project.

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Web Services

• Web Services is a technology that allows for
  applications to communicate with each other in a
  standard format.
• A Web Service exposes an interface that can be
  accessed through messaging.
• Deployable unit.
• A Web service uses protocol to describe an
  operation and the data exchange with another web
  service. Ex SOAP
• Platform independent, say, through WSDL.
• Publishable, discoverable, searchable, queryable
• Scalability issues A group of web services
  collaborating accomplish the tasks of a
  large-scale application. The architecture of such
  an application is called Service-Oriented
  Architecture (SOA).

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Demo

• Lets look at an example for a web application
  that consumes a web services. SpellChecker
• It consumes a web service provided by
  http//ws.cdyne.com