Set of standard and procedure to followed to manage the changes in the software in the SDLC.

Maintain the document and Version of the Software.

Configuration Management is :
- The process of identifying & defining the configuration 
  items in a system,
- controlling the release and change of these items  
  throughtout the system life cycle,
- recording and reporting the status of configuration items
  and change requests,
- and verifying the completeness and correctness of 
  configuration items.

Configuration management is process followed to identify 
all items of testware ,version controlled so that 
traceability can be maintained throughout the life cycle.It 
track for changes and record who made changes so that we 
can track back.For tester configuration management helps to 
uniquely identify tested items,document and test cases.
Configuration management tools and infrastructure is 
defined in test planning.

software configuration management (SCM) is the task of 
tracking and controlling changes in the software. 
Configuration management practices include revision control 
and the establishment of baselines.