Service Modelling & Service Architecture:

Transcription

1 Service Modelling & Service Architecture: From Service Renewal and Service Flows to Service Architecture Presenter: Professor Paul Buhler Head of the Global University Alliance SOA Research & Development at the College of Charleston LEAD the Way

2 Enterprise Modelling and Enterprise Architecture an integrated part of the LEADing Practice Reference Content

3 The LEADing Practice concept have identified which decomposed Service Object are relevant Business Service Service Construct Service Area Service Group Service Type Service Flow Service Roles Service Channel Service Owner Service Rules

4 Business Service The LEADing Practice concept has identified which Service Object are relevant (decomposed object view) Service Construct (setup & delivery) Service Area Survive Group Business Service Service Type (Main/Mgmt./Support) Service Flow (incl. output/input) Service Tier (Strategic/Tactical/Operational) Object (Business & Information) Service Measurements (Level Agreements) Service Owner Service Roles Service Rules Service Channel

5 The LEADing Practice concept has also identified which composed Service Object are relevant for Extended Service Oriented Modelling and Architecture (SOM & SOA) Service Group Service Rules Service Area Objects (business & information) Service Roles Service Construct Service Tier Service relations Application Service Service Performance Drivers Information Service Business Service Platform Service Layered Service Service Reporting Service Type Infrastructure Service Service Flow Service Measurements Process Events Service Owner Service Monitoring Data Service Service Channel Service Delivery

6 Layered Enterprise Architecture Development (LEAD) 6

7 Layered Service Architecture concept The main principle behind the LEAD Service concept, and what makes it differ from other traditional Enterprise Modelling or Enterprise Architecture frameworks, is the fact that it does not only work in domains, but across layers (business, application and technology) within multiple domains through using the decomposition and composition method to integrate effortlessly across the different layers when interlinking the different modelling principles. As shown in the below example, each layer s value objects are defined by the specific layers requirements, the capability of the object, the resources, tasks and information. The functions that a layer provides can be seen as the layer s services since a layer provides a set of functions and tasks and thereby services to its upper layer. In turn, the upper layer uses the lower layer s services (functionality and tasks) to achieve its own functions (services). The n th layer (+1 and/or 1) can therefore be seen as a service requester or provider since it ether gives input or uses the services provided by its lower layer.

8 The LEAD Way of Thinking for Service Orientation and Service Architecture

9 Layered Systems and Rates of Change Layering is natural occurring In the Clock of the Long Now, Stewart Brand introduced the notion that society is a construct of several layers, each with a unique and suitable rate of change As described by Peter Morville, The slow layers provide stability. The fast layers drive innovation. 9

10 Architectural View of Application and Technology Layers Open Source SOA, ISBN-10: , pg 16 10

11 Great Principles of Computing Mechanics 11

12 Layers Support Separation of Concerns 12

13 Stable TA is allowing BA to take root Business Architecture (BA) manifests business goals and objectives and informs Enterprise Architecture (EA) EA shapes the Technology Architecture (TA) to create a foundation upon which the business executes. Business Architecture becomes The Missing Link between Business Strategy, as defined by business goals and objectives, and EA. pg 4 13

14 Three Tenants of Business-Driven SOA pg 3 D with its extensive Reference Content will serve to enable true Strategy to Executio Not only in the Way of Thinking, Working and Modeling BUT also Implementation and Governance 14

15 The Identified Service Object and how they are interlinked with the various Templates: Maps, Matrices & Models for Service Oriented Modelling and Architecture (SOM & SOA)

16 The LEADing Practice Service Reference Content Service Decomposition & Composition 1) Identity: the objects that needs to be populates in the LEAD templates. 2) Populate: the LEAD templates with the relevant objects

17 The LEADing Practice Service Reference Content Service Decomposition & Composition Composed Object Groups Decomposed Objects Relationship between the Decomposed Object and the Object Group

18 LEADing Practice Service Models Example of how services links to Requirement & Goals How services links to: External & Internal Forces Vision & Mission Strategy Objectives Goals (business, application & technology) Drivers (value & performance) Indicators (value & performance) Expectations (value & performance) Value Proposition Business reporting Business requirements

19 LEADing Practice Service Models Example of how services links to Processes How services links to: Processes Business Process Process Step Process Activity Events Gateways Process Types (main, management and supporting)

20 LEADing Practice Service Models Example of how services links to a Process A process delivers one (or more) service(s) upon execution. In this example, a citizen makes a call to a local government organization and explains his/her issue. The process shows the flow of steps and activities during the lifetime of the process, and the result and conclusion of this process is the service being delivered to the recipient (in this case, the citizen). The service that this process delivers is to offer support to the citizen and to try and resolve whatever issue that the citizen is concerned about.

21 LEADing Practice Service Models Example of how services links to a Process Another service being delivered is this time for the government organization itself. Notice that the process flow includes steps to survey the citizen. This is a service rendered by the organization to the organization in other words, an internal supporting service. Internal, because the service is delivered to the organization itself (service consumer), and supporting because the service is used to support the rest of the Customer Sales & Support department of the organization.

22 LEADing Practice Service Models Example of Service Standardization & Integration opportunities within a Service Operating Model

23 LEADing Practice Service Models Example of how services relates to Application How services links to: Application Component Application Module Application Feature Application Function Application Task Application Service

24 LEADing Practice Service Models Example of how services relates to Application An application is used to automate business functions, tasks and services. Applications are also used to automate service reporting through the use of system measurements and system reporting. The purpose of the Application Service Model is to clearly depict the system flow sequence of events when multiple application services are involved in executing a business process flow. It enhances the Application Model by augmenting it with any sequencing constraints, and hand-off points between batch and real-time processing. It would identify complex sequences and identify possible points in the architecture in order to provide information to business users.

25 LEADing Practice Service Models Example of how services relates to Application The Application Service Model is modelled by applying the following architectural modelling rules: An Application Service calls Application Task(s) An Application Service exposes Application Function(s) An Application Function is part of Application Module (Logical Application Component) An Application Function contains System Flow System flow orchestrates Application Service(s) System flow adheres to Application Rules System flow matches Process Flow (including Gateways & Events) Application Role consumes Application Service

26 LEADing Practice Service Models Example of how services relates to Data How services links to: Data Component Data Entity Data Service

27 LEADing Practice Service Models Data Services A Data Service is a service provider that enables data access on demand to users regardless of their geographic location. Also called Data as a Service (DaaS), data services are similar to Software as a Service (SaaS) in that the information is stored either locally or in the cloud, and is accessible by a wide range of systems and devices. Data services can eliminate redundancy and streamline costs by housing critical data in one location, enabling the data to be accessed and/or updated by multiple users while ensuring a single point for updates. Potential drawbacks to data services include server downtime from the data service provider, data loss in the event of a disaster, and the security of the data, both in its stored location and in the transmission of the data among users.

28 LEADing Practice Service Models Examples of how data services is being delivered to the organization from within the Information Architecture design Metadata Domain Defined as data about the data. Metadata is the information that describes the characteristics of each piece of corporate data asset and other entities.

29 LEADing Practice Service Models Examples of how data services is being delivered to the organization from within the Information Architecture design Master Data Domain Refers to instances of data describing the core business entities, such as customer or product data.

30 LEADing Practice Service Models Examples of how data services is being delivered to the organization from within the Information Architecture design Operational Data Domain Also referred to as transactional data capturing data, which is derived from business transactions.

31 LEADing Practice Service Models Examples of how data services is being delivered to the organization from within the Information Architecture design Unstructured Data Domain Also known as content, typically managed by an enterprise content management application.

32 LEADing Practice Service Models Examples of how data services is being delivered to the organization from within the Information Architecture design Analytical Data Domain Usually derived through transformation from operational systems to address specific requirements of decision support applications.

33 Full Service Oriented Modelling and Architecture principles are an integrated part of the LEADing Practice Service Reference Content

34 Full Service Oriented Modelling and Architecture principles are an integrated part of the LEADing Practice Service Reference Content Service Object/ Templates Service Layers Service Tiers Service Flow Decomposition & Composition Service Groups Service Map Service Matrices Service LifeCycle Service Quality Service Transformation Service Operating Model Blueprint & Implementation

35 Conclusions and summary LEADing Practice Service Reference Content represents a new breed of Service Modelling and Service Architecture and is today being recognized as a Service paradigm shift within the global business and IT community. There are many distinguishing differences between LEADing Practice Service concepts and traditional Enterprise modelling and EA frameworks. The unique LEADing Practice differences are: Based on university research around existing service concepts, methods and approaches. Community-driven open architecture and open standard Service Reference Content. Comes with industry-specific versions. Based on research, but developed by practitioners for practitioners. Connects the Service Objects of the enterprise directly from strategy to execution. Is built with a full service perspective and modelling principles. Comes with service performance measures to demonstrate the real value of enterprise architecture. Includes tools for verifying the completeness and quality of business, application and technology designs. Works in layers, not only in domains. Fully integrated methods and approaches with supporting maps, matrixes, models and tools. Integrates its modelling principles to all other existing frameworks, methods and approaches such as ITIL, COBIT, TOGAF, Zachman, ASAP, BPMN, etc. Service modelling and architecture principles are integrated and interlinked. Cross-disciplinary concept fitting both to strategy modelling, balance scorecard, reporting, process modelling (BPMN), service modelling, application development, etc A consolidated and harmonized Way of Thinking, Working, Modelling, Implementing, Training and Governing (fully integrated built-in continuous improvement).

36 Questions? Global University Alliance Professor Paul Buhler Head of the Global University Alliance SOA Research & Development at the College of Charleston Mobile For more information:

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