soa – design, development and governance · soa – design, development and governance ......

SOA – Design, Development and Governance

Rajesh ShewaniSoftware IT Architect [email protected]

Agenda

• Introduction

• SOA Design Scenario

• Governance

• Summary

A programming model complete with standards, tools, methods and technologies such as Web services

Capabilities that a business wants to expose as a set of services to clients and partner organizations

An architectural style that requires a service provider, requestor and a service description. It addresses characteristics such as loose coupling, reuse and simple and composite implementations

Implementation

Architecture

Business

OperationsA set of agreements among service requestors and service providers that specify the quality of service and identify key business and IT metrics

Roles

Service Oriented Architecture Different Things to Different People

Gather requirementsModel & SimulateDesign

DiscoverConstruct & TestCompose

Integrate peopleIntegrate processesManage and integrate information

Manage applications & servicesManage identity & complianceMonitor business metrics

Financial transparencyBusiness/IT alignmentProcess control

The SOA Lifecycle

Aligning Business and IT Objectives

Function(Service Definition)

Security &Compliance

Performance &Quality (KPI)

AccelerateTime to Market

IncreaseRevenue

ReduceCosts

Enterprise Architecture

Reference Architecture Governance

Roadmap

BusinessObjectives

ITObjectives

SOA and Enterprise Architecture: A Common Goal

However, achieving Flexibility is not easy; it requires an integrated set of tools, methods, models and reference implementations to guide an organisation

Operations Reference Implementations

Methods

Tools

ModelsDevelopersAnalysts

ArchitectsUsers

Decomposition of the Business Blueprint to the appropriate level for Business Services

1. Production

1.2Define Master

Planning

1.3Define

Rules & Policies

1.1Define

Production Strategy

1.4Schedule

the Production

1.5Operate

Plant

1.6Monitor

Production

1.7Control Quality

1.8Manage

Maintenance

1.4.1Schedule

production quantities

1.4.2Define Line Schedule & Sequence

1.5.1Track

production -Traceability /

Control

1.5.2Track and monitor

production parameters

1.5.3Assemble &

Package Product (vehicle)

1.4.3Pull

Material

1.4.4Schedule

Line Delivery

1.5.4Broadcast messages

1.5.5Manage alerts

1.5.6Manage

Manufacturng order mgmnt

1.5.7Control Flow

1.6.1Assess MPS

& MRP Performance

1.6.2Assess

Procurement Performance

1.7.1Establish

quality targets

1.7.2Monitor quality

1.7.3Feedback

quality status

1.7.4Continuous

improvement

Production

Production Strategy

Master Production Planning

Production Rules & Policies

Production Scheduling

Production Monitoring

Quality Control

Plant Operations

Maintenance Management

1.5.2.1Track WIP

1.5.2.2Get Bill Of

Material

1.5.2.3Capture as-

Built

8

Introduction to SOA Entry Points…the path for achieving business value from SOA

Existing assets can be leveraged by service enabling them and fill gaps by creating new reusable services

Customers, Partners and Employees can collaborate & share business assets for improved business operations

Better informed decisions can be made with trusted data & information throughout your organization.

Business Process Innovation and flexibility can be achieved by treating tasks as modular services & thru faster deployment

InformationInformation

ConnectivityConnectivity

ReuseReuse

PeoplePeople

Process Process

Systems, Users and Multi-channels can be easily connected to reduce maintenance costs and provide any-to-any linkages

Entry Point Realizations Add SOA into IT Environment

ReuseReuse• Access External

Service

• Access Service Directly

• Access Service Indirectly

• Create New Service

• Accessing EIS via Adapter

• Expose Message Broker Flow

• Expose IMS as a Service

• Business Rules

PeoplePeople• Portlet to

Services• Ajax Based Apps• Portlet Federation• Managed Client • Process Portal• Enabling

Organizational Collaboration

• Enterprise Content Mgmt

• User Deployment Services

• Composite Business Services with Portal

• Integrate & Expose Services via Portal

Process Process • Design &

Modeling of Processes

• Assembly of Processes

• Deployment of Processes

• Management of Processes

InformationInformation• Simple

Information Services

• Data Federation

• Data Consolidation

• Data Cleansing

• Master Data Mgmt

• Model SOA Lifecycle

• Manage SOA Lifecycle

• Enterprise Content Mgmt

ConnectivityConnectivity• Open Standards

access to APIs

• Multi Channel Access

• WS-Enterprise Apps

• ESB Federation

• WPS & WMB Interaction

• Value Based Service Availability

• Consumer Side ESB

10

Introduction to SOA Disciplines…advanced techniques to reinforce SOA progress

Identify and specify business services to remove redundancy and promote service reuseDesign

Develop and enforce governance processes throughout the service lifecycleGovernance

Bulk process enterprise information with state of the art scheduling and resource management to achieve high operational efficiencyBatch Processing

Establish test suites and test automation to ensure consistent resultsTesting

Maximize the benefits from business processes, as well as the people and information involved in them. BPM

Detect, decide and respond in accordance with defined business policies to enable dynamic decision makingEvent Processing

Monitor and secure services to ensure high quality, safe servicedelivery

Security & Mgmt

Realizations of SOA Disciplines Improve Execution

• Business Service Modeling

• Transformation Analysis & Service design

• Applying SOMA to Service Design

• Design of Composite Business Services

• Custom Patterns & Transformation

• Applying RUPSOMA for Service Design

• Govern Reuse• Comply with

Reuse• Manage Change• Value Realization• Regulating New

Service Creation• Enforcing

Standards & Best Practices

• Getting More Reuse of Services

• Service Change & Versioning Control

• Service Discovery

• Manage Services

• Manage Security

• Manage BPM, IaaS & Governance

• Create Web Services Fabric

• IT Virtualization

• Provisioning

• Metering & Financial Mgmt

• SLA Mgmt

• Develop Test Plans

• Automate Regression Tests

• Measure Test Coverage

• Monitor Test Execution

• Profile for Performance

• Modeling & Simulation

• Mgmt With Rules

• Monitoring BAM

• Choreography

• Content Centric

Design Governance Security & Mgmt Testing BPM

Agenda

• Introduction


• Governance

• Summary

Implementation

Service Modelling

Process Modelling

Service Specification

ServiceAnalysis

Legacy SystemService Harvesting

Identify Project Scope

Service ImplementationOrchestrationImplementation

Interface Implementation

Identify Business Process Scope

IdentifyService

Candidates

Legacy SystemInterface Mapping

A SimplifiedSOA Development Cycle

ProcessAnalysis

Process Specification

Generate Generate Mapping

SOA Impacts the Whole Application Lifecycle

“Before I deploy it in production, how can I be sure that the service flow matches the design?”

“How can I debug my production application without reproducing the problem.”

“Which part of the SOA infrastructure is causing this service problem? The app server or the messaging connections?”

Assemble Deploy ManageModel

IntegrationDeveloper IT Service ManagerApplication

DeveloperService and

Solution Tester IT Operations

“How do I make sure it works reliably and securely with other services I’m dependent on?”

“What’s the root-cause of this service problem – the requirement, the service flow or the application?”

“Some of our services are used by our partners? How can I be sure they are meeting their SLAs?”

“Does my new SOA application meet it performance goals?”

“How do I design andimplement services basedon my existing systems?”

“What are the businessobjectives and how wouldI know when I meet them?”

“Which business services do I optimize? What impact will that have on my IT systems?”

BusinessAnalyst

“How do I test a composite solution when many of the pieces are external to me?”

Lotus DB2Rational WebSphere

Deploy

Deployment Team

Platform-specific Runtime

Specialists

Manage Quality of Service

Manage Runtime Platforms

Business Operations Analysts

IT Operations Managers

Monitor Business Results

Manage IT Performance

Create Business and IT Dashboards

Manage

Assemble

Development Team

Integration Developers

Testers

Choreograph Services

Develop New Services

Configure Human Task ManagerDevelop User

InterfaceTest

Business Driven DevelopmentAn Iterative, Business-focused Development Process

Team Unifying Platform

Model

Model Business RequirementsBusiness

AnalystsSoftware and Data

Architects Model Software Architecture

Unified Modeling Language

Continual Process Improvement

ObservationModel (KPIs)

Run-timeStatistics

WSDL

EAR, DDL

EventsBusiness Process Execution Language

Requirements

SOA Design Scenario – Purpose• SOA Design scenario focuses on aligning business design and IT solution

design such that an enterprise can be agile and responsive to new business opportunities

– Business design• Render explicit business strategy and objectives• Business-driven to prioritize and to shape service requirements, design and

implementation• Greater service reuse to speed up time-to-market while reduce business cost

– IT solution design• Provide services in support of key business initiatives with explicit traceability • Repeatable and scalable design method• Service composition for greater reuse• Service binding policy for multi-channel access• Solutions easy to assemble, deploy and mange

Scenario Focus Areas

• Methods– Provide the conceptual framework for the what’s, how’s & why’s of

modeling– Alignment between business design & IT design

• Artifacts– Roles involved in artifact creation & consumption– Tools involved and artifact mapping– Lifecycle management– Patterns and transformation template development

• Tools and Tool Integration– Use of tools in support of design method– Model traceability

Silo ServicesComposite

ServicesVirtualizedServices

DynamicallyRe-Configurable

ServicesComponentizedIntegrated

Level 1 Level 4 Level 5 Level 6 Level 7Level 3Level 2

Applications

Methods

Organization

Infrastructure

Architecture

Business View

Modules ServicesProcess

Integration via Services

Dynamic Application Assembly

ComponentsObjects

Structured Analysis &

Design

Service OrientedModeling

Service OrientedModeling

GrammarOrientedModeling

Component Based

Development

Object OrientedModeling

Ad hoc IT Governance

Emerging SOA Governance

SOA and IT Governance Alignment





Service Oriented Modeling

Process Integration

via Services

Platform Specific

PlatformSpecific

Platform Neutral

DynamicSense & Respond

PlatformSpecific

PlatformSpecific

Monolithic Architecture

Emerging SOA

Grid Enabled SOA

Dynamically Re-Configurable Architecture

ComponentArchitecture

Layered Architecture SOA

PlatformSpecific

Function Oriented

ServiceOriented

ServiceOriented

ServiceOriented

Function Oriented

Function Oriented

ServiceOriented

Service Integration Maturity Model (SIMM)

Transforming Business Needs to SOA solutions Requires a Systematic, Repeatable Best Practices based Approach

RealizationDecisions on sourcing of services

Specificationof Services, Components, Flows

Identificationof candidate Services, Components, and Flows

• A number of techniques have been defined to design good service architectures–Delivered through methods, tools, domain models, and service offerings–Examples include IBM’s RUP SOMA method–Rational Method Composer

A Service Specification defines the dependencies, composition, exposure decisions, messages, quality of service constraints and decisions regarding the management of state within a service.

Identify Quality of Service Requirements

Use non-functional requirements to specify the desired quality of service

Quality OfService

Identify Services Composition and

Flow

Review of functional areas and business processes will elaborate the composition of services from other services and their flow to enable the business function. (Service) Flow Specification describes the choreography between services.

Service Composition

Apply Service Litmus Tests & Document

Exposure Decisions

Use Service Litmus Tests to make service exposure decisions – “From my candidate services, which ones I choose to expose?”

Service ExposureDecisions

Service MessagesSpecification

Identify and specify the format and content of input and output messages of a service.

ServiceMessages

Document State Management Decisions

Sometimes the composition of services requires management of state. Document these decisions such as the answer to “What kind of persistence will be used and how will to be enabled?”

Service Model

State ManagementDecisions

Identify ServiceDependencies

Service Dependencies

Detailed review of the service may expose service dependencies on other services or applications that will be used to realize the functionality of the service.

Example: Candidate Service Definition using SOMA

Service Specification

Agenda

• Introduction


• Governance

• Summary

When Do I Need SOA Governance?

• When the organization reaches the stage where they would like tobegin wide spread adoption of SOA, issues arise that demonstrate the need for a governance framework tuned and modified for SOA

Many customers start their SOA journey by building a Many customers start their SOA journey by building a proof of conceptproof of concept or or embark on a small embark on a small pilot projectpilot project..

The objective is to demonstrate that the technology can be succeThe objective is to demonstrate that the technology can be successfully ssfully used by the organization to build an SOA application.used by the organization to build an SOA application.

see Appendix A

Currency conversion service

Accounting department

App. 1 App. 2

1. Provide acurrency service that fills a specific line of business (LOB)

A scenario on the importance of SOA governance –step 1

* Scenario from Introduction to SOA Governance, Bobby Woolf.



App. 1 App. 2

Orderfulfillment

Sales

Purchasing

Legal

2. Other LOBs start using

the service





App. 1 App. 2

3. LOBs increase use

of services / quality suffers



the service


Orderfulfillment

Sales

Purchasing

Legal



App. 1 App. 2





the service


Orderfulfillment

Sales

Purchasing

Legal

x

x

x

x

x x

4. Service is fixed at provider’s

expense



App. 1 App. 2





the service


Orderfulfillment

Sales

Purchasing

Legal


expense



App. 1 App. 2





the service


Orderfulfillment

Sales

Purchasing

Legal

x

x

x

x

x x

5. Fix works temporarily but problem

reappears


expense



App. 1 App. 2





the service


Orderfulfillment

Sales

Purchasing

Legal

5. Fix works temporarily but problem

reappears

xx

xxx x

6. Maintenancecosts soar /

provider ends service

Define the Governance Approach

Monitor and Manage the Governance Processes

Deploy the Governance Model Incrementally

Establish the Governance Need

Industry proven SOA Governance and Management MethodDetailed governance process guidance Comprehensive framework and processes span lifecycle of SOA governanceMethodology to help customer establish SOA Center of Excellence

MethodMethod

Foundation to realize SOA business benefitsLeverages existing Governance structuresMethodology and tools based on best practices and thought leadership and support for open standardsSkills and experience gained from many SOA engagementsCatalyst to align business and IT strategy

Customer ValueCustomer Value

SOA Business and IT Governance PrinciplesCustomized processesCenter of Excellence OrganizationRoles and responsibilitiesDefined metricsSOA Governance Transition Plan

DeliverablesDeliverables

The Governance roadmap will be a participative model

Define the scope of governance: business,

development governance or service management or all of

the above

Define new governance processes for services and

define SOA governance mechanisms such as the SOA

Center of Excellence

Begin implementation of the SOA Center of Excellence,

Skills Enablement, Organizational Change,

Infrastructure Change, etc.

Monitor composite application performance

and adjust; Monitor effectiveness of governance

changes

The Governance workshop

Understand current governance structures

Determine the Governance Focus

Plan

Continuous SOA Governance Process Measurement & Improvement

Define Enable Measure

Define the SOA Governance Model

Implement the SOA Governance Model

Refine the SOA Governance Model

Create IT governance baseline for HDFC

Define scope of governance

Define and refine governance processes

Define organizational change

Conduct change readiness survey within

HDFC

Define IT changes in SOA development

Implement the transition plan

Initiate SOA Org Changes

Launch the SOA Center of Excellence for HDFC

Implement infrastructure for SOA

Measure effectiveness governance processes

Measure effectiveness of organization change

Review and refine operational environment

Agenda

• Introduction


• Governance

• Summary

Summary

• Focus of Enterprise Solutions Today– Service-oriented architecture– Model driven development – Business, domain, system,

application…..– Business innovation and optimization

• Keys to Successful SOA– Successful Alignment of IT and Business– Understanding and Enforcing your Architecture– Taking Advantage of "heritage"/Mainframe/Core Assets – Keep Design Assets and Code in-sync/aligned/coordinated – Capture and Reuse of Architectural IC– Early Focus on Quality and Testing– Govern and Manage Effectively across E2E Assets

soa – design, development and governance · soa – design, development and governance ......

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