Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 1

Prof. A. Taleb-BendiabLiverpool John Moores

UniversitySchool of Computing

a.talebbendiab@livjm.ac.ukhttp://cms.livjm.ac.uk/taleb/

research

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 2

Outline

Motivations and scene setting Stringent modern expectations Rise of global service economy

Drivers for a paradigm shift Internet of Services Requirements including socio-technical

E-Service Computing: Science and technology Brief introduction, definitions and state of the art

WS, SOA, Autonomic Computing, etc. Understanding e-service engineering

Our Approach, results and case-studies Remaining challenges and open questions

Conclusions and Q&A

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 3

Emerging Networked Landscapes

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 4

Drivers for Change

Modern Expectations Higher availability -- near-100% availability on 24x7

delivery basis Higher malleability -- organic change, and just-in-time

growth and adaptation Allowing flexible system up scaling without sacrificing

performance, availability or maintainability Lower maintainability and administration requirements

80% IT budgets spent on applications operation, maintenance and post production retro-fitting, etc. (Forrester survey, 2006).

Higher survivability for business continuity Service outages are frequent and costly

65% of IT managers report that their websites were unavailable to customers over a 6-mth period

25% indicate 3 or more outages outage costs are high

Social effects: negative press, loss of customers [Source: InternetWeek 4/3/2000]

Catastrophic failure of critical systems

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 5

Searching for Inspirations Social and biological systems

Learning from other industries Specialisation and service commodity Extended value chain == demand + supply chains Agility is critical to delivering mission/business critical

systems

Rise of the Internet of Services vision anticipated to reshaping our methods and processes

for development, source, commission, deployment and management of

large-scale complex software systems as those required for e-government, e-health, and e-learning systems

Will have a set of socio-technical implications including: organisational flexibility, organisational alignment, working

practices and strategies and control. 

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 6

IoS ChallengesIoS Challenges Technical Challenges

Conceptual frameworks, foundations and standards Tools and techniques for design-time and runtime

services engineering composition, discovery, orchestration and federation in

an open environment; identity, trust and reputation; deployment and management, and consistency check

tools Service infrastructure:

Generic Business Services; End-to-End Management Services; Information Exchange and Resource Virtualisation Services;

Techniques and benchmarks for the effective evaluation. Business models and sustainability for the IoS economy.

Social and organisational challenges:: [This is not covered in this talk]

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 7

Progress so far… #1 

State-of-the-art Business Process Modelling [Process-Centric Architecture

Talk]

Process models that define business practices and needs Often changing; what was correct yesterday, may be out of

date today Complex; often encoded as business logic within

applications, making it difficult to update Domain challenges; an expert in the problem domain may

not be an expert in SE development Ambiguous; different parts of the enterprise may have

differing opinions on the exact nature of the processes.

Web Service [WS Talk]

Service-Component Architecture [SOA Talk]

Self-Adaptive and Self-Organising [AC and SASO Talk]

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 8

E-Service Modelling

Source: Ref. 1

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 9

APSCOA Technology #1 Technology

Business Process Management Business Process Modelling Notation Open source solution

ActiveBPEL Execution engine and designer,

WS-BPEL based on WS standards and architecture such as

Interface/Definition: WSDL, XML Schema

Protocols: SOAP over HTTP/HTTPS, SOAP/Plain XML over JMS, REST, JAVA/EJB Invocation, WS-Reliable Messaging

Orchestration:: BPEL 1.1/2.0, BPEL Extension for People, WS-Human Task

Security/Identification/ Authentication: WS-Security, SAML, LDAP

Governance: WS-Policy Expression Languages: XPath, XQuery,

XSLT and JavaScript Attachments: SOAP with Attachments

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 10

APSCOA technology #2

Service-Oriented Modelling Framework (SOMF) is a software development practice that employs

disciplines and a universal language to provide tactical and strategic solutions to enterprise problems.

SOMF methodology provides open standard modelling language for holistic view of the Analysis, Design, and Architecture of all

'Software Entities' in an Organization.

Problem Domain Organization == Business Solution Domain Organization == Service

solution providers

Source: SOMF

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 11

APSCOA technology #3

Centralised Self-* Computing Characterising AC Systems

A software system is autonomic, if it possesses the following capabilities: Self-configuring— choosing a

suitable behaviour, based on user preferences, context, …

Self-tuning— choosing behaviours that optimize certain qualities (performance, year-end profits, …)

Self-repairing— shifting execution to another behaviour, given that the current one is failing

Self-protecting— choosing a behaviour that minimizes risks (attacks, viruses, …)

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 12

Bringing it all together !

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 13

On-Demand e-Services Provisioning for SME

Merseyside On-Demand ICT Provisioning Centre: Marketplace-oriented provision and

management of on-demand software hosting and management services for SME.

Merseyside On-Demand ICT Observatory Centre: Roadmap for technology R&D and innovative

services Showcase project -- demonstrators, etc. K&T transfer

Advanced training and support for engineering, operation and management of On-demand ICT.

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 14

BP to SOA -- Dental Triage Demo.

Current System

Re-engin

eerin

g via

Neptu

ne toolk

it

New

Visual Modelling of Protocol or process flow

New Grid-Based System

Process is com

piled into an open introspective form

at

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 15

An Application so far …

High-assurance Grid-based decision support systems Combining evidence

and guidelines Clinical pathway

development studio Demo. for

Breast cancer OOH – Dental

triage service Sens&Act Body

Area Network

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 16

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 17

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 18

Market-Driven E-Service Service

provision Centralised Decentralised

mode

Load balancing

Monitoring Health check Regulation

Learning

1818

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 19Prof. A. Taleb-Bendiab, talk: Panel for WEBIST’07, Date: 19/04/23, Slide: 19

Conclusions and Q&A

Prof. A. Taleb-Bendiab, ETEC’08, April 2008, page: 20

Acknowledgements

Acknowledgement The researchers and staff:

Dr. Weal Omar, Dr. Phil Miseldine, Dr. Martin Randles, David Lamb, Andy Laws, etc.

www.cms.livjm.ac.uk/2nrich www.cms.livjm.ac.uk/cloud www.cms.livjm.ac.uk/taleb

Sponsors and Partners EPSRC Christies and Linda McCartney NHS trusts Emergency services

Acknowledgements Acknowledgements

My thanks to the Team

That’s the end – so I’m off !