Www.cbdiforum.com Independent Guidance for Service Architecture and Engineering Convergent...

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Independent Guidance for Service Architecture and Engineering

Convergent Architecture:Beyond SOA

David Sprott

© 2010 Everware-CBDI International2

Architecture and Time

Gothic cathedral architecture style evolved over several centuries as techniques, materials and skills developed and as the buildings were erected in new environments that presented new challenges.

Early Gothic

St Denis Ambulatory

1140 AD

High Gothic

Chartres

1194 1224 AD

Rayonnant

St Chapelle Paris

1243-1248 AD

Flamboyant

Saint-Maclou, Rouen

1434-1521 AD

Why would software architecture be any different in principle?


Pivot Point

Last decade: SOA = primarily an IT led strategy. Vendor led. “SOA projects” and technology infrastructure.

The recession has had a major impact on IT project activity. “There is no business as usual – all architecture activity is focused on

conventional integration.” Chief architect, Banking “EA function has been eliminated as a cost saving measure because it could

not show short term ROI.” Chief architect, Pharmaceutical Company

Next decade? Intense focus on cost reduction Support for optimization and innovation. Move to cloud


Next Decade Business Drivers

Drivers Example Goals Business and IT Architectural Response

M&A completion

Reduce post merger complexity

Multi-channel Common services

Demerger Facilitate separation. Componentization, ecosystem processes

Cost Reduction

Consolidate, eliminate duplicate resources.

Focus on core business

Application Modernization, layering, standardization and componentization

Cloud deployment

Specific business goals

Reduce head count;

Increase <. . . > profitability;

Increase resource utilization;

Meet < . . . > targets

. . .

Unconventional boundaries.

Unconventional partners.

Richer business process, event and service models

Regulatory Compliance

Automated policy implementation.Real time MI

Standardized services

Climate Change

Reduce cost of energy; Optimize energy source.

Smart systems, meters and sensors.

Virtualization, resource sharing, cloud

Collaborative processes


Key Technology Enablers

Service Oriented Architecture (SOA)

Event Driven Architecture (EDA)

Web 2.0 Sensors Analytics

Complex Event Processing (CEP)

A richer set of architectural patterns that potentially enable better achievement of principles and deliver business opportunity – in the Cloud!


Technology Enablers - Service Oriented Architecture

<<Application>>Parcels System

Schedule Pickup Pickup and Deliver

Shipments

Subcontractors

1. Parcels System makes asynch service call to Process Service - Schedule Pickup

2. Schedule Pickup makes asynch service call to Subcontractors Service(Operation: requestSchedule)

3. On reply, Schedule Pickup makes asynch service call to Shipments Service (Operation: scheduleShipment)

1

2

3

Process

Core Business

SOA EXAMPLE


Shipments

Subcontractors

1. Subcontractors service subscribes to Shipments Service for shipmentRequestReceived

2. Parcels Systems makes call to Shipments Core Business Service which triggers shipmentRequestReceived event.

3. Subcontractors service responds to event by scheduling the shipment. This triggers the shipmentScheduled event.

4. The Shipments service responds to the shipmentScheduled event by changing the state of the shipment to Scheduled.

2

4

13

Core Business

EDA EXAMPLE

- Event Driven Architecture (EDA)


Technology Enablers - EDA Patterns

Publish/Subscribe (Pub-Sub). Consumers subscribe to events. Event emitters have no knowledge of subscriber behavior. Services will normally register through a 3rd party (an event service) rather than

directly with each other.

Capability Service Services offer complete capability relating to a business resource independent from

other services.

State Change Precedence Minimum pre condition requirement prior to change of state. Pre conditions become post conditions wherever possible.


Technology Enablers– Complementary Patterns

EDA style SOA style

Independent process stepsEvents trigger services High ratio between event and possible event responsesDynamic and discretionary response to eventsDynamic introduction of new events and subscribersCross functional and inter organization processes Unpredictable orchestration requirementsHigh business value in managing complex events Complex architecture, potentially difficult to testAgility by abstraction (context free)

Triggered by eventsCan trigger events

Predictable orchestration requirementsStable pre-conditional rulesHigh integrity data requires extensive pre-conditions

Facades for back end systems Cohesive process contained within a capability or composite applicationInternals of capabilitiesDeep architecture more moving partsService component based testingAgility by loose coupling, contract and layer separation


Technology Enablers - Complex Event Processing (CEP)

CEP a separate pattern from EDA constrained by the availability and quality of event data?

RAWEVENT

RAWEVENT

RAWEVENT

CEP

RULES

BUSINESSEVENT

Process Service

Capability Service

Core Business Service

Analytics Service


Technology Enablers - Web 2.0

Shipments

Subcontractors Core Business

5


5. Shipments Service publishes event shipmentSpaceAvailable for route/date combination6. Customers subscribe to shipmentSpaceAvailable 7. Customers place orders for space using hosted shopping cart SaaS8. Order validation completed using commodity services including for

address verification, sales tax calculation and amazonPayments9. Parcels Mashup System makes Service call to Core Business Service Shipments

(Operation: partLoadSale)

8

<<Application>>Parcels Mashup

amazonPayments

SMSAlertsandNotificationsService

globalAddressVerification

salesTaxCalculator

76

9


Ecosystem NOT Enterprise

a set of business capabilities that collaborate to support a common purpose and exhibit high levels of interaction based on event relationships, shared services and information.

Ecosystem Scoping Examples

Benefits to real end user

Power grid delivery ecosystem - nuclear, wind, coal, hydro etc generators, plus transmission grid operators and major consumers

- coordinated systems deliver continuous power when required; minimize emissions.

Process optimization across all participants

Airport terminal ecosystem- airlines, airport security, airport logistics, ground transportation system operators, air traffic control etc

- multiple transport operators, ticketing, package providers, tour operators, telecoms companies and security systems operators.

Common goal Baggage ecosystem

- reduce baggage losses; improve lost baggage retrieval time and cost

- airlines, airports, security operators, logistics companies


Logical Architecture

Solution Layer

Services

Client


Specification Architecture

Solution Layer

Underlying Services

Core Business Services

Process/Capability Services

Common Components

Service InterfaceThin ClientThick Client

Utility Services

Channel Channel Channel

Event

Services


Specification Architecture – Sourcing Classification

Solution Layer

Underlying Services



Common Components


Utility Services


Event

Services

STANDARDIZED

LEGACY

COMMODITY

COMMODITY

ECOSYSTEM

COMMODITY

SPECIALTY


Specification Architecture - Security Classification

Solution Layer

Underlying Services



Common Components


Utility Services


Event

Services

COMMUNITY PRIVATE

PUBLIC

PRIVATE

PRIVATE

COMMUNITY PRIVATE

COMMUNITY PUBLIC PUBLIC

PRIVATE


Deployment Architecture - Cloud

Infrastructure Managed by

Infrastructure Owned by

Infrastructure Located

Accessible and Consumed by

Public Third party provider Third party provider Off premise Untrusted

PUBLIC COMMODITY SERVICES

Private/

Community

Enterprise or

Third party provider

Enterprise or

Third party provider

On premise

Off premise

Trusted

STANDARDIZED PRIVATE; ECOSYSTEM AND COMMUNITY PRIVATE

Hybrid Both Enterprise & third party provider

Both Enterprise & third party provider

Both on premise & off premise

Trusted & untrusted

COMMUNITY PUBLIC AND PUBLIC

Based on ideas published by Cloud Security Alliance


Conclusions – Beyond SOA

Collaborations of events, services, CE and Web 2.0 Organized around ecosystems Enabling shared capability services Integrated ecosystem business architecture driving Cloud deployment More patterns . . .


Everware-CBDI and CBDI Forum

Independent specialist AM/SOA firm Located UK and USA CBDI Forum

Practices CoE Documented, published best practices,

reference architecture, repeatable processes

Structured, meta model based, model driven, agile practices

Approach widely used by F1000 companies, consultancies/integrators and government departments

Facilitating SOA standards 25,000+ subscribing architects worldwide

Everware-CBDI AM/SOA Solution Business including

Consulting, Education and Knowledge products and tools



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