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Manuel  Vidaurre   @mvidaurre Using  Ruby  to  Implement  e-­‐commerce Lessons  Learned  and  Challenges El “Rudo” The “Ruthless” 

2010  -­‐  BuzzUrbano 

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Verifica4on  of  Understanding   (Communica*on  Gap) • There are known knowns and known unknowns • but also there exist the unknown unknowns that neither the customer/user or the developer known • and the unknown knowns that the customer/user known but the developer doesn’t How Projects Really Work (version 1.5) http://www.projectcartoon.com/cartoon/2 

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"Facts  are  the  air  of  scien/sts.   Without  them  you  can  never  fly."   Ivan  Pavlov 

Verifica4on  of  Understanding   (Features:  Building  the  right  thing) • Ubiquitous Language • Features management and implementation • Baselines and Metrics/Indicators "Facts  are  the  air  of  scien/sts.   Without  them  you  can  never  fly."   Ivan  Pavlov 

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"The  main  value  of  so9ware  is   that  it  is  soft”   Robert  C.  Mar7n 

Value  of  So

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"The  fundamental  goal  of  all  good   design  and  engineering  is  to  create   maximal  value  added  for  any  given   investment…  design  is  an   investment  ac/vity”   Barry  Boehm 

Value  of  So

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"Uncertainty  and  the  value  of   flexibility  in  the  face  of  uncertainty   are  at  the  heart  of  both  so9ware   design  and  finance”   Kevin  Sullivan 

Value  of  So

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Muchas  Gracias！ Thank  you  very  much!