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Lean Software Development - Nepean IT Section Resources

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					Lean Software
 Development
       What is Lean software
          development?

Lean software development refers to a type
 of software development that matures the
 organization to where it needs to be to
 reliably produces what the customer
 wants, so quickly that it disables the
 customer from changing their minds. Lean
 uses seven key principles.
            These principles are:

   Eliminate Waste
   Amplify Learning
   Delay Commitment
   Deliver Fast
   Empower the Team
   Build Integrity In
   See the Whole
           Eliminate Waste


Anything considered not of value from the
 customers perspective is waste. To
 eliminate waste, you must first figure out
 what waste is and how to effectively
 eliminate it. The seven wastes of software
 development are: Partially Done Work,
 Extra Features, Extra Processes Task
 Switching, Waiting, Handoffs and Defects.
            Amplify Learning


In development one must consider what to
  do, see if it works, learn from the results,
  and try again. Learning from past
  mistakes helps you outline boundaries
  and overcome problems.
           Delay Commitment


When using the Lean development Methodology it
 is key to hold back from making unchangeable
 decisions until they can be based off of facts not
 predictions. This way you keep your options
 open for as long as possible.
              Deliver Fast


The goal is to make the customer take as
 long as possible to make decisions, so
 that that decisions can be made off of the
 best possible information. Once they have
 made their decision you then try to create
 that value as fast as possible. This should
 happen in one smooth flowing response.
         Empower The Team


Those who do the work in a Lean
 organization make the important
 decisions due to the rapid flow of a Lean
 development. Management supplies
 training, expertise, and leadership so that
 the right decisions are usually correct.
         Built Integrity In


There are two types of integrity;
 perceived integrity and conceptual
 integrity. Perceived integrity is the
 experience the customer has with the
 system. Conceptual integrity is when
 all the parts of the system work
 together smoothly as a whole.
           See The Whole


Lean development encourages
 collaboration of all the work to avoid
 management problems. By making
 people accountable for what they
 change and control the task will have
 less problems.
                    Advantages


   Eliminating waste helps speed up the process,
    save resources and the overall efficiency.
   Helps deliver the product early.
   Empowerment of the team helps decision
    making between the team, which in turn,
    motivates the team.
                 Disadvantages


   The project relies heavily on the team working
    together and commitment to the project.
   Customers need to know what they need and
    can't change their minds once they make a
    decision
   You require a team who's abilities complement
    each others.
                Bibliography:


http://www.poppendieck.com/pdfs/Lean_Software
  _Development.pdf


http://www.ibm.com/developerworks/rational/librar
  y/jun07/kroll/


http://www.projectperfect.com.au/info_lean_devel
  opment.php

				
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posted:1/16/2013
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