Model Based Systems Engineering · What is MODAF? • Ministry of Defence Architecture Framework • An Enterprise Architecture Framework (or “standard”) designed specifically

Model Based Systems EngineeringEnterprise Architecture Frameworks

Mr Robert Paternoster

Maritime Architecture Modelling SME

DESSESEIG-maritime4@mod.uk

0117 91 36094

Systems Engineering

and Integration Group

V1.1

Aim

• To understand the benefits of Enterprise

Architecture (EA) modelling

• To become familiar with the principle and

structure of MODAF

Definition of Enterprise

• An "enterprise" is any organisation or collection of organisations, that have a common set of business goals and/or a single bottom line.

TOGAF Definition

Definition of Architecture

• Architecture is about structure and inter-relationship

• Some uses of the term architecture:

– A Computer Architecture describes the

structure and organization of a

computer's hardware or system software

– Architecture is the art and science of

designing and constructing buildings

– A Web Services Architecture identifies

the functional components and defines

the relationships among those

components to effect the desired

properties of the overall architecture

Definition of Enterprise Architecture

• “The formal description of the

structure and function of the

components of an enterprise,

their interrelationships, and

the principles and guidelines

governing their design and

evolution over time” (Ref:

IEEE 1471).

Components of an Enterprise

• An enterprise is made up of many components including but not limited to:

– People

– Processes

– Physical Structures

– Engineering and Information Systems

– Financial Resources

• In order to achieve the common “Enterprise Goal” these components must coordinate their functions and effectively exchange information and resources

• For large enterprises, these relationships between components can be very complex.

Managing Complexity

• This complexity tends to lead to the creation of

stove-pipes where different areas of an enterprise

operate in isolation.

• This lack of “bigger picture approach” can result in:

– Reduced Efficiency

– Poor Investment Decisions

– Duplication of Effort

– Loss of agility

• One way of managing this complexity and preventing

the creation of stove-pipes is to model the enterprise

architecture

Modelling the Enterprise Architecture

• Enterprise Architecture (EA) models enable the capture and

presentation of information relating to the Enterprise, with the

aim of:

– Aiding the understanding of complex issues

– Gaining a consistent understanding of the EA and associated

assumptions thus avoiding expensive rectification projects

– Supporting Enterprise planning and change management activities

– Analysing the model to identify and articulate potential issues

– Supporting the elicitation of a coherent set of requirements

• Architecture models are developed at a level of detail that is

appropriate for a given objective.

A Common Framework

• Large corporations may well have separate

enterprise architecture projects

– But there is much in common about the systems in

each “enterprise”

– There is usually great potential for gain in the use of a

common architecture modelling standard or framework

• A common framework can provide a basis for the

development of an architecture repository:

– Allows the integration and re-use of models, designs,

and baseline data

What is MODAF?

• Ministry of Defence Architecture Framework

• An Enterprise Architecture Framework (or “standard”) designed specifically for the MoD Enterprise

– A set of rules and constraints on how to organise information about the enterprise

– Templates that provide a graphical and textual visualisation of the enterprise area being investigated

– Guidelines to govern architecture activity

• MODAF provides a language or “grammar” to produce consistent and coherent enterprise architectures across Defence

MODAF Views

• A MODAF view describes a specific aspect of an

enterprise architecture

• For example:

– Strategic View (StV) 1 – Enterprise Vision. Designed

for senior management to capture the strategic

direction of the enterprise

– System View (SV) 2a - System Port Specification.

Designed for engineers to specify the ports on a

system, and the associated protocols used.

• Within MODAF 1.2 there are 46 different MODAF

views

MODAF is NOT…

A lot of disconnected views

Why MODAF is NOT a lot of disconnected views?

Underlying Model Constructed in Accordance to MODAF Meta-Model

OV-1a: High-Level Operational Concept Graphic

•

Why MODAF is NOT a lot of disconnected views?

Underlying Model Constructed in Accordance to MODAF Meta-Model

OV-1a: High-Level Operational Concept Graphic

MODAF Viewpoints

Strategic

(StV 1-6)

Why?

‘Capabilities’

Operational

(OV 1-7)

What?

‘Logical’

System

(SV 1-12)

How?

‘Solution’

Acquisition

(AcV 1-2)

When?

‘Programmatic’

Technical

(TV 1-2)

‘Constraints’

All View

(AV 1-2)

‘Summary’

Service

Orientated

(SOV 1-5)‘Services Available’

Simplified MODAF 1.1 Meta-Model (M3)

Simplified MODAF 1.1 Meta-Model (M3)

StV2

OV2

TV1

AcV2

SV1

SV2aStV1

StV5

OV5

Views Example: Joint Fires

Strategic

Operational

StV2

JF

OV1

(Info Ex)

(Surveillance) (C&C) (Effect)

Locate ID Decide Destroy(Info Ex)

OV3OV3

OV1 OV2 OV3 OV5 SV1STV2 Acv2

System

Acquisition

AV1 TV1SOV2

Strategic

Operational

StV2

JF

OV1

(Info Ex)

(Surveillance) (C&C) (Effect)

(Info Ex)

OV3OV3

OV1 OV2 OV3 OV5 SV1STV2 Acv2

System

Acquisition

AV1 TV1

OV2

Views Example: Joint Fires

SOV2

Strategic

Operational

StV2

JF

OV1

(Surveillance) (C&C) (Effect)

Locate ID Decide Destroy

SOV2SOV2

System

Acquisition

OV1 OV2 OV3 OV5 SV1STV2 Acv2AV1 TV1

Views Example: Joint Fires

SOV2

(Cap Config)

(Cap Config)(Cap Config) (Cap Config)

Strategic

Operational

System

Acquisition

StV2

JF

OV1

(Surveillance) (C&C) (Effect)

Locate ID Decide Destroy

SOV2SOV2

2008 2020

AcV

2

2008 2020

AcV2

2008 2020

AcV2

200

8

202

0

AcV

2

SV1

OV1 OV2 OV3 OV5 SV1STV2 SOV2 Acv2AV1 TV1

Views Example: Joint Fires

Summary

• MODAF is an Enterprise Architecture Framework

designed specifically for the MOD enterprise

• The MODAF Meta-Model (M3) enables enterprise

architecture modelling to be done consistently

across Defence

• The 46 MODAF views provide a common way of

presenting outputs from the MODAF compliant

models

• MODAF is an evolution of DoDAF and basis for NAF

revision 3

Questions?