Web Services Business Strategies and Architecture

by Clark, Mike; Waterhouse, Mark; Fletcher, Peter

• ISBN13: 9781590591796
• ISBN10: 1590591798
• Format: Paperback
• Copyright: 2003-08-01
• Publisher: Apress

Summary

Adopting Web Services will affect many processes within any organization. To throw light on the most important issues, Experts in the Industry share their insights. The resultant papers cover a broad spectrum from architecture to business strategies without diverting into deep technological fashions. Each study in the collection will answer specific business challenges thrown up by Web Service architectures. Before changing, commissioning, or evaluating a Web Service initiative, all IT Managers, System Architects, Lead Developers, and Business Visionaries should study and reference this book.

Table of Contents

Foreword: Web Services Business Strategies and Architectures	1	(1)
What Are Web Services?	1	(2)
Do They Mean Business?	2	(1)
What Web Services Are Not	3	(1)
Why Web Services Are Important	3	(2)
Financial Imperatives	4	(1)
Strategic Imperatives	4	(1)
Structural Imperatives	5	(1)
How Web Services Do All This	5	(2)
Resources	7	(2)
Return On Investment (ROI) and Web Services	9	(16)
Defining Return On Investment (ROI)	9	(1)
An Example of ROI Calculation	10	(1)
ROI Analysis	10	(2)
Discounted Cash Flow Analysis	11	(1)
Payback Period Analysis	11	(1)
ROI Analysis Becoming a Necessity	12	(1)
ROI and Web Services	12	(1)
ROI Not Just About Technology	12	(1)
Calculating ROI of Web Services	13	(9)
Factors to be Included in ROI Calculation	14	(6)
Applying the ROI Formula	20	(2)
Not the Only Model	22	(1)
Conclusion	22	(3)
Selling Web Services	25	(14)
What's So Special About Web Services?	26	(1)
How do Web Services Benefit Development?	26	(1)
Point by Point Examination of Web Services	27	(2)
Threats to Web Services' Rise to Power	29	(7)
ASP or Not ASP?	29	(1)
Let Them Be Free	30	(1)
Customer Trust	31	(1)
Dependent on Microsoft's New Software (a.k.a. .NET)	32	(1)
Charging Mechanism	32	(1)
It's Just Another Standard; I'll Wait for the Next One?	33	(1)
What Type of Companies Will Form Around Web Services?	34	(1)
Web Services Development	34	(1)
Hosting of Web Services	35	(1)
Testing Labs	35	(1)
Web Services Brokerages	35	(1)
Web Services Toolkit Developers	36	(1)
Conclusion	36	(3)
Enterprise Application Integration (EAI) and Web Services	39	(18)
Enterprise Application Integration (EAI)	40	(4)
What is EAI?	41	(1)
Types of EAI	41	(3)
Service-Oriented Architecture (SOA)	44	(2)
Components and Operations of SOA	45	(1)
Web Services	46	(1)
EAI and Web Services	46	(6)
Salient Differences between Traditional EAI Solutions and Web Services	47	(1)
Example of Web Services for EAI	48	(1)
Essential Features of a Web Services Framework	49	(1)
Convergence of EAI Solutions and Web Services	50	(2)
Where to Start?	52	(2)
Taking Advantage of Existing Assets	52	(1)
Build an Internal Repository for Web Services	53	(1)
ROI on Using Web Services for EAI	53	(1)
Bottom Line	53	(1)
Conclusion	54	(3)
Business To Business Integration (B2Bi) and Web Services	57	(14)
What Is B2B Integration (B2Bi)?	57	(2)
An Intimidating Task	59	(1)
Essential Features of a B2B Integration Solution	59	(4)
Conventional B2Bi Patterns	60	(2)
Factors Involved in Your Choice of Integration Pattern	62	(1)
The Role of Extensible Markup Language (XML) in B2Bi	63	(5)
Web Services and B2Bi	64	(2)
Web Services Networks	66	(2)
Conclusion	68	(3)
Integration Brokers and Web Services	71	(14)
Integration Brokers Enable a Best-of-Breed (BOB) Approach	72	(1)
Architecture of Integration Brokers	72	(3)
Hub-and-Spoke Architecture	72	(1)
Message Bus Architecture	73	(1)
Multi-Hub Architecture	74	(1)
Services of Integration Brokers	75	(3)
Enable All Types of Integration	75	(1)
Interoperability	75	(1)
Open Architecture	75	(1)
Support for All Communication Protocols	76	(1)
Directory Services	77	(1)
Trading Partner Management and Personalization	77	(1)
Security	77	(1)
Scalability	77	(1)
Transactional Integrity	77	(1)
Web Services	78	(4)
Will Web Services Become Just Another Service of Integration Brokers?	78	(1)
Easy Connectivity with Third-Party Web Services Solution	79	(1)
An Example of Integration Brokers and Web Services	80	(1)
Existing Integration Broker Infrastructure and Web Services	81	(1)
Conclusion	82	(3)
ERP and Web Services The Third Wave	85	(16)
Introduction	85	(6)
The Business Drivers Behind ERP	86	(1)
The Journey So Far	87	(1)
ERP Implementation Methodology	88	(1)
Why ERP and Web Services?	89	(2)
How Do Web Services Make ERP Easier?	91	(8)
Current Scenario	92	(2)
Technology Issues	94	(1)
Web Services-ERP based model: Architecture for Information Integration/Exchange	94	(2)
Web Services-ERP based model: Architecture for the Hosted Application Model	96	(1)
Comparison	96	(1)
Beneficiaries of ERP Web Services	97	(1)
Economics of ERP Web Services	98	(1)
Interrelation	98	(1)
The Road Ahead	99	(1)
Conclusion	99	(2)
E-Logistics Processes Integration Using Web Services	101	(16)
E-Logistics Processes Integration	103	(4)
ELPIF Components and Services	104	(3)
E-Logistics Example: UPS Integration	107	(4)
A Working B2B System Using ELPIF	111	(4)
Conclusions	115	(2)
UDDI-based Electronic Marketplaces	117	(26)
Some Common Requirement of All E-Commerce Models	118	(3)
Content Management	118	(1)
Interoperability in E-Commerce	119	(1)
Supply Chain Management Solutions as a Special Case of e-Commerce	119	(2)
What Is a UDDI-based eMarketplace?	121	(1)
How Customers and Businesses Participate in a UDDI based eMarketplace	121	(1)
How Can We Start a UDDI-based eMarketplace?	122	(3)
What Is the Role of UDDI in Our eMarketplace?	124	(1)
What Is the Role of Web Services Definition Language (WSDL) in an eMarketplace?	124	(1)
Architecture of a UDDI- and WSDL-based eMarketplace	125	(6)
UDDI is Very Good, But it is Not Enough for an eMarketplace	126	(2)
How WSDL Servers Work: Where Will a WSDL/SOAP Server be Located?	128	(3)
Interoperability in SOAP	131	(3)
Responsibilities of SOAP in Our UDDI-based eMarketplace	132	(1)
How Our SOAP Client Will Work with the SOAP Servers of eSuppliers (SOAP Interoperability)	132	(1)
How Will Businesses Get Involved in Our eMarketplace?	133	(1)
How Do UDDI and WSDL Bring Down the Cost of B2B Integration?	134	(2)
Mechanism for Publishing at Our UDDI-based eMarketplace	134	(2)
Common Business Protocols and Practices	136	(3)
Advantages of Common Business Protocols	137	(1)
How To Publish Fingerprints at a UDDI Registry	137	(2)
The Next Generation Dot Com	139	(1)
A Pragmatic Approach To UDDI-based eMarketplaces	139	(1)
Conclusion	140	(3)
Web Services and the Real Estate Industry	143	(14)
Technological Challenges Faced By the Real Estate Industry	144	(2)
Shortcomings of Current Technologies	146	(1)
Benefits from Web Services	146	(2)
Business Drivers	147	(1)
Technical Drivers	147	(1)
Web Services Technologies	148	(2)
Dynamic Discovery Using UDDI	149	(1)
Message Exchange Using SOAP	149	(1)
Defining Contracts Using WSDL	149	(1)
Case Study	150	(5)
Problem Description	150	(4)
How Can This be Implemented?	154	(1)
Conclusion	155	(2)
Business Process Standards For Web Services	157	(18)
The Need for Business Process Standards	158	(1)
B2B and EAI Processes	159	(1)
Business Process Features	159	(2)
The Web Services Stack	161	(1)
The Candidates	162	(8)
ebXML BPSS	162	(3)
XLANG	165	(2)
WSFL	167	(1)
BPML	168	(2)
Convergence	170	(1)
OMG EDOC	171	(1)
Conclusion	172	(3)
Web Services and Straight Through Processing (STP)	175	(26)
What Is Straight Through Processing (STP)?	176	(7)
The Need for STP	176	(1)
The Drivers and Benefits of STP	177	(1)
The Current State of Technology Supporting STP	178	(1)
STP Encompasses EAI and B2Bi	178	(2)
STP Involves Business Process Management (BPM)	180	(1)
Critical Parameters of STP	181	(2)
Application of Service-Oriented Architecture (SOA) -based Framework to STP	183	(1)
The solution	184	(1)
Why Use Web Services for STP?	184	(6)
An Example Usage of Web Services for STP	190	(7)
Matching Utility Description	190	(1)
An Example Business Process	191	(1)
The Use of Web Services	192	(3)
Advantages of Web Services Over the Current Implementation	195	(2)
Where To Start?	197	(1)
Conclusion	198	(3)
Web Service Intermediaries	201	(20)
What Is a Web Service Intermediary?	201	(6)
Intermediary Services	202	(3)
High-Level Web Service Intermediary Architecture	205	(1)
Web Service Intermediary Issues	205	(1)
Standards and Web Services Networks	206	(1)
The Birth of the UDDI Value Added Service Supplier	207	(5)
The VASS Business Plan	207	(4)
Who Pays the VASS?	211	(1)
Business Architecture for a Web Services Brokerage	212	(6)
Creation	214	(1)
Publication	215	(1)
Promotion	216	(1)
Selling	217	(1)
Conclusion	218	(3)
An Introduction To ebXML	221	(16)
Introduction	221	(1)
Need for a Global Electronic Business Standard	222	(2)
State of Things Today	222	(1)
Advantages of Having a Global Standard	223	(1)
What Should a Global Electronic Business Standard Consist of?	223	(1)
The ebXML Standard	224	(3)
How ebXML Works	224	(3)
What ebXML Does Not Address	227	(1)
Current Industry Support	227	(2)
Accelerating ebXML -- The Role of Web Services	229	(3)
Web Services -- Benefits	231	(1)
Web Services -- Current issues	231	(1)
Current Landscape	232	(1)
Relationship Between Web Services and ebXML (Implementation Phase)	232	(3)
Conclusion	235	(2)
Web Services Architectures	237	(20)
WebServices.Org	238	(3)
The Stencil Group	241	(1)
IBM	242	(1)
W3C	243	(2)
Microsoft	245	(2)
Sun Microsystems	247	(2)
Oracle	249	(4)
Hewlett-Packard	253	(1)
BEA Systems	253	(1)
Borland	254	(1)
Conclusion	255	(2)
.NET and J2EE, a Comparison	257	(16)
Introduction	257	(1)
Web Services Overview	258	(9)
Service Description	259	(2)
Service Implementation	261	(2)
Service Publishing, Discovery, and Binding	263	(1)
Service Invocation and Execution	264	(3)
Time To Choose	267	(3)
Conclusion	270	(3)
Web Services and Application Frameworks (.NET and J2EE)	273	(18)
Flavors Of Application Frameworks	274	(3)
Microsoft .NET Framework	275	(1)
Java 2 Platform, Enterprise Edition (J2EE) Framework	276	(1)
Web Services: All About Interoperability	277	(6)
Classification of Web Services	277	(1)
Application Frameworks and Web Services	278	(1)
Microsoft .NET	279	(1)
Java 2 Platform, Enterprise Edition (J2EE)	279	(1)
Differences Between J2EE and .NET Frameworks for Web Services Support	280	(3)
How To Choose an Application Framework for Web Services	283	(3)
The Ten Most Important Deciding Factors	283	(3)
Application Servers and Packaged Application Providers	286	(1)
A Word of Caution	286	(1)
An Example of Application Servers and Web Services	286	(2)
Conclusion	288	(3)
Web Services Security	291	(14)
The Web Service Levels	293	(2)
The Communications Level	295	(1)
Web Services Framework Providers	296	(1)
IBM Web Services	296	(1)
Microsoft .NET	296	(1)
Sun Microsystems	296	(1)
Hewlett Packard	297	(1)
BEA Systems	297	(1)
webMethods	297	(1)
Web Services Providers	297	(1)
Microsoft's .NET My Services (Formerly code-named HailStorm)	298	(1)
Bowstreet	298	(1)
SAP	298	(1)
Security products	298	(2)
Netegrity	298	(1)
Securant	299	(1)
Oblix	299	(1)
Grand Central	299	(1)
Quadrasis	299	(1)
WSBANG (Web Services Broker and Network Gateway)	299	(1)
The Supporting Levels	300	(1)
Conclusions	301	(4)
Network Security for Web Services	305	(14)
Strategy Overview	305	(3)
Physical Security	306	(1)
Identity Security	306	(2)
Patches and Security Guidelines	308	(1)
Microsoft-Specific Information	308	(1)
Other Helpful Web Sites for Security and Virus Information	308	(1)
Additional Security Software	309	(1)
Security Infrastructure Components	309	(4)
Network Configuration	310	(2)
Program Deployment Infrastructure	312	(1)
Monitoring and Auditing	312	(1)
Security Configuration Alternatives	313	(2)
Certificate Security	313	(1)
Global Cache Security	314	(1)
Custom Security	314	(1)
Business Strategies	315	(2)
Conclusion	317	(2)
Remote References and XML Web Services	319	(14)
What Are ``Remote References''?	319	(7)
Distributed Object Technology	320	(1)
Definition of the Term Remote Reference	321	(1)
Examples of Remote References from Existing Middleware	322	(2)
Typical Uses of Remote References	324	(2)
Remote References and Web Services	326	(2)
Applying Remote Reference Principles to Web Services	326	(2)
Interoperability Considerations	328	(1)
Language Interoperability	328	(1)
Web Service Interoperability	328	(1)
WSDL Interoperability	329	(1)
Minimizing Problems with Remote References	329	(1)
Conclusions	330	(3)
Index	333