software product lines
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Software Product
Lines
Paulo Gandra de Sousa
pagsousa@gmail.com
May 2008
Credits
Parts of this presentation are from previous SEI
presentations available at
http://www.sei.cmu.edu/productlines/presentations.html
A Software Product Line is
a set of software-intensive systems
sharing a common, managed set of
features
that satisfy the specific needs of a
particular market segment or
mission
and that are developed from a
common set of core assets
in a prescribed way
Software Product Lines
Explore
Commonality & Variability
to achieve
Economy of Scope
SPLs are not:
Fortuitous small-grained reuse;
Single-system development;
Just component-based;
Just service-based development;
Just versions of a single product;
Just a configurable architecture;
Just a set of technical standards.
Product lines
=
Strategic Reuse
What’s different about reuse
in SPLs?
Business dimension
Iteration
Architecture focus
Preplanning
Process and product
connection
Key concepts
Essential activities
Core Asset Develoment
Attached process
Production plan
Product Development
Management
Essential activities
Practice areas
Necessary changes
Costs
Architecture
Software Components
Test Plans, Test Cases, Test Data
Business Case and Market Analysis
Project Plans
Tools and Processes
People, Skills, Training
Example Benefits
Productivity
Quality
Cost
Labor needs
Time to market
Ability to move into new markets
Economics of product lines
In summary
Software product lines epitomize the concept of strategic, planned reuse.
The product line concept is about more than a new technology. It is a new way of doing one’s software business.
There are essential product line activities and practices areas.
At the heart of sucessful SPLs
A pressing need that addresses the heart of the business
Long and deep domain experience
A legacy base from which to build
Architectural excellence
Process discipline
Management commitment
Loyalty to the product line as a single entity
Entry Criteria for SPL
Are there multiple systems with sufficient commonality?
Does the organization have articulated goals it is trying to achieve with a software product line approach?
Do the benefits of successful product lines match the goals of the organization?
Is there sufficient support within the organization to launch a software product line adoption effort?
Thank you
Software Product Lines
Paulo Gandra de Sousa
May 2008
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