1. Web services introduction, application and its future
ECLT5820 Project Specification – Group 8
WONG CHING CHEUNG Dennis ( )
TRAN CHON WAI ( )
Web services introduction, application and its future

2. Agenda

3. Agenda Introduction SOAP REST Comparison to Traditional Protocols
Applications
A Show Case
Challenges
Conclusion & Future

4. Introduction

5. Introduction
A software system designed to support interoperable machine-to-machine interaction over a network

6. Introduction
Originated at 1999
Ubiquitous nowadays

7. Why we need it Exposing the existing function on to network
Connecting Different Applications
Standardized Protocol

8. SOAP

9. SOAP
Simple Object Access Protocol
based on the internet and XML

10. SOAP

11. SOAP
Heterogeneous
Human-readable
Low system requirement

12. REST

13. REST
Representational State Transfer
An architectural style

14. REST Resource identified in URI Represent as: JSON, XML, JPEG…
State Transfer: POST, GET, PUT, DELETE

15. REST
Client-Server Communication
Cacheable
Uniform Interface

16. Comparison with Traditional Protocols
Web Services
FTP MQ
EDI
Availability
Medium-High
Medium
High
Performance
Reliability
Low
Scalability
Manageability
Cost
Low-Medium
Complexity

17. Applications Today
A common systems-to-system communication protocols crossing different applications within an enterprise
Popular in external communications (eCommerce, B2B)
Most popular channel as of an API from enterprises
Hub-spoke business model driving more usages
IT infrastructure also a driving force

18. A Show Case – Payment Gateway

19. A Show Case – Payment Gateway

20. Challenges Lack of standardization
Commercial decision rather than technical consideration
Security concern – DDoS Attack?

21. Conclusion & Future
A proven efficient operation system for system integration during its application for years
Most preferred choice of API today
More applications in different area to emerging .com & mobile app market

22. Q&A
Thank you 