SCRUM -an agile software development methodology

Claudiu Pantea

Introduction to SCRUM

Scrum is an Agile Software Development Process.

Scrum is not an acronym name taken from the sport of Rugby,

where everyone in the team pack acts together to move the ball down the field

analogy to development is the team works together to successfully develop quality software

Introduction to SCRUM (cont.)

Jeff Sutherland (a guru) states:

“Scrum assumes that the systems development process is an unpredictable, complicated process that can only be roughly described as an overall progression.”

“Scrum is an enhancement of the commonly used iterative/incremental object-oriented development cycle”

Description Overview

Scrum is named after the game of Rugby in which a group is responsible for picking up the ball and moving it forward.

It is an iterative, incremental process for developing any product or managing any work.

Scrum focuses on the entire organization for its implementation to be a success.

Description Overview (cont.)

Scrum principles include: Quality work: empowers everyone involved

to be feel good about their job. Assume Simplicity: Scrum is a way to detect

and cause removal of anything that gets in the way of development.

Embracing Change: Team based approach to development where requirements are rapidly changing.

Incremental changes: Scrum makes this possible using sprints where a team is able to deliver a product (iteration) deliverable within 30 days.

Scrum Methodology

Description Components

Roles: Scrum Master Developer QA Documentation member Project manager

Description Components (cont.)

Processes: Pregame Planning and Architecture: - Identify project - Prioritizing functional

requirements - Identify resources available - Establishing the target

environment

Description Components (cont.)

Processes: Game Sprints:- lasts for 30 days - Analysis, Design, Develop - Testing (this happens throughout

sprint) - Review - Adjust Postgame - Closure (this includes delivering a

functioning deliverable, sign-off, start next sprint.

Description Components (cont.)

Values: Flexible deliverable Flexible schedule Small teams Frequent reviews Collaboration Team Empowerment Adaptability

Scrum Process Flow

Process Comparison

Description Advantages Extreme value - reduces risk in ROI Supports business value driven S/W Dev. Control of very complex process of product

development Allows Developers to focus on delivering a

usable functionality to the client Generates productivity improvements by

implementing a framework that empowers teams and thrives on change

Insists that the Client prioritize required functionality.

Ability to respond to the unpredictable in any project requirements.

Description Advantages (cont.)

Flexibility Knowledge sharing between

Developers Collective ownership OO technology

Description Disadvantages

Scrum is not effective for small projects

Expensive to implement Training is required

Usage Guidelines – When to use requirements are not clearly defined. work is delivered in increments work is measured and controlled productivity is maximized by applying

known technologies organizations are willing to do anything

and everything for a project to succeed project is important and no one has

confidence that any existing approach will work.

control and management is Empirical

Usage Guidelines – When to avoid

there isn’t a flexible environment corporate culture isn’t conducive

to this of development environment

teams of developers are more than 10. Six is ideal.

Cost is a major issue No management support No formal training available

Usage Guidelines – Implementation Need for an extra member just in case

an active member is absent, the documentation member substitutes

Location: Although not impossible, its hard to implement Scrum when all team members are not in the same location

Non-Supportive management Cost Lack of Customer Involvement Collective ownership Isolation of sprint team

Scrum Success Factor

Scrum and CMM CMM advocates Repeated Defined problems,

solutions, Developers and organizational environment.

Scrum says that this is not entirely possible because developers change from one project to another.

Scrum assumes that the development process is always empirical and not defined.

Scrum says uncertainties are impossible to measure, therefore, looks beyond the repeatable /defined approach

Conclusion

Scrum offers: a high degree of flexibility promises a high probability of success

Scrum benefits: an anticipating culture increases the sense of urgency promotes the sharing of knowledge encourages dense communications facilitates honesty among developers

Bibliography

facweb.cti.depaul.edu