BEL 33 21 ! 59 3B ; 85 55 U 111 6F o 8 08 BS 34 22 " 60 3C < 86 56 V 112 70 p 9 09 HT 35 23 # 61 3D = 87 57 W 113 71 q 10 0A LF 36 24 $ 62 3E > 88 58 X 114 72 r 11 0B VT 37 25 % 63 3F ? 89 59 Y 115

deflection 1. Prevents creation of institutional knowledge about incidents and learning needed to prevent them in the future ii. Use for fact-based problem-solving e. ENABLE CREATION OF PRODUCTION METRICS A/B testing requires fast CD to support ii. Use feature toggles to control experiments, cohort creation, etc. iii. Use telemetry to measure outcomes iv. Etsy open-sourced their experimentation framework

control. Focused on version control and automated environment creation – time reduced from 8 weeks to 1 day b. ENABLE ON-DEMAND CREATION OF DEV, TEST, AND PRODUCTION ENVRIONMENTS i. Major contributing everything is checked into version control 1. Application code & dependencies 2. Environment scripts & creation tools 3. DB scripts and reference data 4. Containers 5. Automated tests 6. Project artifacts

lead times measured in minutes, the constraint usually follows this progression: a. Environment creation: b. Code deployment: c. Test setup and run: d. Overly tight architecture: iv. ELIMINATE HARDSHIPS