Applying Lean Six Sigma in IT industry

I would like to get suggestion from all on below things

Could you please let me know your thoughts in IT where we can implement lean six sigma ? To elaborate it little more I would like to know where we can apply lean six sigma in

A. Development Projects

Requirement gathering

Design

Coding

Testing

UAT

Different kind of approvals/sign off after each stage

B. Production Support Projects

Category of ticket

Classification of ticket

Analysis of ticket

Closing of tickets

Different kind of approvals/sign off after each stage

Your input will really help me to think in a different dimension

You can also write to me at bilay777@gmail.com