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Backlog Management Index

Backlog Management Index

In this tutorial, you will learn about backlog management index.  The Backlog Management Index (BMI) is an important service quality metric for managing the backlog of open, unresolved problems in a software project. It is used in maintenance and support software projects to ensure that the project remains controlled.

The Backlog Management Index (BMI) measures the rate at which problems are closed in a software product’s backlog. It’s calculated as the number of problems closed divided by the number of problems added to the backlog. 

Product Backlog

Product Backlog is a prioritized list of features, enhancements, bug fixes, technical tasks, and other deliverables that might be needed in a product. It is used in Agile software development, especially in Scrum.

Sprint Backlog

The Sprint Backlog is a list of tasks or items selected from the Product Backlog that the development team commits to complete during a Sprint (usually a 1–4 week time-boxed period).

Formula

The Backlog Management Index is calculated as follows:
(if there is no customer SLA exists)

BMI =

                       Number of requests closed 
               _______________________________       *   100
                    Number of requests opened or added
If the customer SLA exists, the BMI is calculated as follows:
BMI =
               ( Number of requests closed within SLA)
____________________________________    *  100
        (Number of requests  scheduled to be closed)

Example

Consider the following scenario:
A maintenance project received 12 requests and during the same period, the project team managed to close 20 requests. Calculate the BMI for the month of the project. (No SLA defined).
Answer:
From the given data:
  • Number of requests closed during the month = 20
  • Number of requests opened during the month = 12

 

The Backlog Management Index is calculated as
            (Number of requests closed during the month)
__________________________________________  * 100
                      (Number of requests opened)

 

Backlog Management Index ( BMI ) =   20 / 12

=  1.66

 

BMI for the month of the project is 1.66

BMI and its trend indicate how effectively the queue of requests is managed and the adequacy of resources.

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