The increasing adoption of Business Process Management (BPM) has inspired pioneering software architects and developers to effectively leverage BPM-based software and process-centric architecture (PCA) to create software systems that enable essential business processes. Reflecting this emerging trend and evolving field, Process-Centric Architecture for Enterprise Software Systems provides a complete and accessible introduction explaining this architecture.
The text presents, in detail, the analysis and design principles used in process-centric architecture. Illustrative examples demonstrate how to architect and design enterprise systems based on the business processes central to your organization. It covers the architectural aspects of business process management, the evolution of IT systems in enterprises, the importance of a business process focus, the role of workflows, business rules, enterprise application integration, and business process modeling languages such as WS-BPEL and BPML. It also investigates:
- Fundamental concepts of process-centric architecture style
- The PCA approach to architecting enterprise IT systems
- Business process driven applications and integration
- Two case studies that illustrate how to architect and design enterprise applications based on PCA
- SOA in the context of process-centric architecture
- Standards, technologies, and infrastructure behind PCA
Explaining how to architect enterprise systems using a BPMS technology platform, J2EE components, and Web services, this forward-looking book will empower you to create systems centered on business processes and make today’s enterprise processes successful and agile.
Table of Contents
Part I: THE PROCESS-CENTRIC ARCHITECTURE PARADIGM
Enterprise Software Systems
Architecture for Systems
Introduction to Business Processes
Activities in Business Processes
Types of Activities
Importance of Business Processes to Enterprise
Process-Centric Architecture—A Quick Introduction
Evolution of IT Architecture
Historical Perspective on Enterprise Computing Architectures
Traditional Ways of Supporting Business
Concept of Process-Centric Architecture
The Case for a New Approach
What Is Process-Centric Architecture?
Process Logic Abstraction
Integration Concept as Handled in PCA
Workflow in PCA
Holistic View in Architecture
PCA in the Context of Other Architectures
Business Process Management
What Is BPM?
PCA and BPM
Business Process Life Cycle
Part I: THE PROCESS-CENTRIC ARCHITECTURE PARADIGMIntroduction
Components of PCA
The Business Process Model
Business Logic Elements
User Interface Application Layer
Flows Handled in a Process
Benefits of Process-Centric Architecture
Benefits to IT Systems
Scalability of the PCA Style and Approach
Complexity versus Manageability
Raised Level of Abstraction for the IT System
Part II: ARCHITECTING IT SYSTEMS, THE PROCESS-CENTRIC STYLE (DESIGNING PCA)
A Typical Manifestation of Process-Centric Architecture
Architectural Design in PCA
Re-Architecting an Existing IT System for PCA
Addition of an IT Subsystem to an Existing IT System
SOA for Services
Need for SOA in PCA
Complementary Approach to Architectural Design
Standards and Technologies
Process Modeling Standards
Process Execution Standards
Inter-Process Layer Interactions
Business Logic Interaction Standards
Technologies and Tools
Case Study—Architectural Design Applying PCA
Case Study I
Case Study II
Types of Business Processes
Practicalities in Architectural Design
Each chapter begins with an "Objectives" section and concludes with "Exercise Questions"
Parameswaran Seshan is a Principal (Education and Research) with Infosys Technologies Ltd., Bangalore, India. At Infosys, he is part of the E-comm Research Labs. He has around 14 years of work experience in the Information Technology (IT) industry as a researcher, educator, architect, and programmer. Before joining Infosys in 2001, he worked as an Advisory Systems Analyst with APL (American President Lines Ltd.), Oakland, California, U.S.A. Parameswaran has also worked as a software engineer with Case Consult (I) Pvt. Ltd., Thiruvananthapuram, India. He holds a Bachelor of Technology (B.Tech) degree in Computer Science and Engineering from the University of Calicut (in 1995). His work experience in the IT industry involved research, programming, architecture, and design.
At Infosys, Parameswaran has been doing research work in the area of Process-centric Architecture, Business Process Management (BPM) , Software architecture, and new computing models/paradigms. He has also been teaching architecture and high-end technology courses at Infosys. He was the lead architect for the home-grown Business Process Management System (BPMS) from Infosys and was also actively involved in its design and development. Parameswaran has architected, designed, programmed and supported a number of IT systems over his career as a computer software professional.
Parameswaran is an active researcher. He has published papers at international conferences and other forums. He has worked on joint research works with Microsoft Research India and Researchers from Universities such as Copenhagen University and University of Melbourne in the areas of BPM and Agent-oriented software engineering.
Parameswaran has designed, developed and supported IT systems involving various technologies, at APL. He programmed system tools to automate operations. He also led a team in software development and support projects at APL. Parameswaran programmed system tools based on REXX to automate conversion of programs from one programming environment to another, at Case Consult.
Parameswaran's areas of research interest include software architecture, process-centric architecture, new computing models, intelligent software agents and intelligent systems.