Process-Centric Architecture for Enterprise Software Systems: 1st Edition (Paperback) book cover

Process-Centric Architecture for Enterprise Software Systems

1st Edition

By Parameswaran Seshan

Auerbach Publications

333 pages | 51 B/W Illus.

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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



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




Business–IT Gap

Concept of Process-Centric Architecture


The Case for a New Approach

What Is Process-Centric Architecture?

Process Logic Abstraction

Qualities Addressed




Integration Concept as Handled in PCA

Workflow in PCA

Holistic View in Architecture

Similar Approaches

PCA in the Context of Other Architectures

Business Process Management

What Is BPM?


Business Process Life Cycle

Six Sigma


Process Redesign

Process Automation

BPMS Products

BPM Landscape

Exercise Questions

Components of PCA

The Business Process Model

Process Layer

Business Logic Elements

User Interface Application Layer

Process Execution



Addressing Integration


Business Rules

Flows Handled in a Process

Benefits of Process-Centric Architecture

Business Benefits

Benefits to IT Systems

Scalability of the PCA Style and Approach

Complexity versus Manageability

Raised Level of Abstraction for the IT System


The Approach


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



Service-Oriented Architecture

Bottom-Up Approach

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

Implementation Options

Case Study—Architectural Design Applying PCA

Case Study I

Case Study II

Implementation Considerations

Types of Business Processes

Process Infrastructure

Best Practices

Practicalities in Architectural Design

Each chapter begins with an "Objectives" section and concludes with "Exercise Questions"

About the Author

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.

About the Series

Infosys Press

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Subject Categories

BISAC Subject Codes/Headings:
BUSINESS & ECONOMICS / Information Management
COMPUTERS / Information Technology
COMPUTERS / Software Development & Engineering / General