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Lean software process
- 1. Lean Software Process HandlingMuda in the IT Industry Dhivya Arunagiri Senior Business Analyst Thoughtworks, Chennai March 11th, 2011
- 2. Muda – The7 variants Wastage Due to 1. Over Production 2. Process Failure 3. Bad Quality 4. Transport 5. Inventory 6. Idle Time 7. Operator Motion
- 3. Muda 1: Overproduction My client has 5 different types of end users. Some users have a lot of extra features while others do not have even the basic ones
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- 6. Muda 2: Dueto Process Failures I keep tracking the development effort on a daily basis but it is a corrective measure. How do I visualize the blockers slippages as well as Scope Creep upfront?
- 7. Finger Charts –Data Capture 90% 100% 1.1 Wait Park Rea Buff Point Point Points End of Appr for In ed/d dy / er Tota s 1.0 s 1.1 Dev # 1.0 Scope Date oved appr Dev esco defin (10% l (100% (100% s (90%) oval ped ed ) ) ) Aug-6 1 0 0 8 0 864 86 872 0 0 6 880 Aug-7 2 0 0 8 0 864 86 872 0 0 6 880 1 Aug-8 3 0 0 20 0 852 86 872 5 6 7 6 880 Aug-11 4 0 0 20 0 852 86 872 11 12 13 6 880 Aug-12 5 4 0 28 8 854 86 894 16 18 20 6 880 Aug-13 6 4 0 28 8 854 86 894 22 24 26 6 880 Aug-14 7 4 0 36 0 854 86 894 27 30 33 6 880 2 Aug-15 8 4 0 36 0 854 86 894 27 30 33 6 880 Aug-18 9 4 12 30 66 782 86 894 32 36 40 6 880 Aug-19 10 4 12 36 64 778 86 894 38 42 46 6 880 Aug-20 11 6 22 38 64 764 86 894 43 48 53 6 880 Aug-21 12 14 22 38 66 764 86 904 49 54 59 6 880 3 Aug-22 13 14 24 46 66 758 86 908 54 60 66 6 880 Aug-25 14 14 30 40 68 764 86 916 59 66 73 6 880 Aug-26 15 38 18 34 88 740 86 918 65 72 79 6 880
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- 9. Muda 3: BadQuality We have a defect tracking system but still we end up having a lot of defects. • Test Driven Development • Continuous feedback or Kaizen
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- 11. Muda 4: Transport My team has grown. Status Communication is becoming a major issue.
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- 13. Muda 5: Inventory MyClient is in a volatile industry. By the time, we release a feature, parts of it have become redundant Plan for the current and consecutive iteration only
- 14. Muda 6: IdleTime If one pair slips off on the completion date for a requirement, the second pair remains idle.
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- 16. Muda 7: OperatorMotion Each developer is specialised in one area. How do we ensure we disseminate the knowledge? • Paired Programming • Pair Rotation
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