Software   has   been   developed   for   decades   without   taking   sustainability   into  consideration.  This  holds  for  its  energy  efficiency,  that  is  the  amount  of  energy   software   consumes   while   ensuring   other   system   qualities   like   security,   performance,   reliability,   etc.   etc.   Software   un-­‐sustainability,   however,   is   becoming   increasingly  evident  with  the  growing  interest  worldwide.  Finally  IT  specialists  are   becoming   aware   that   software   solutions   can,   and   should,   be   designed   with   sustainability   concerns   in   mind.   In   doing   so,   they   can   create   solutions   that   are   technically   more   stable   (hence   requiring   less   modifications   over   time),   target   societal  goals  with  a  higher  certainty,  or  help  sustaining  the  business  goals  of  both   developing   and   consuming   organizations.   Everything   sounds   great.   The   real   question   is,   how?   How   can   we   redirect   software   engineering   practices   toward   sustainable   software   solutions?   How   can   we   turn   sustainability   into   a   business   so   that   companies   will   finally   invest   in   it?   Based   on   various   case   studies   in   collaboration   with   industry,   this   talk   explores   software   sustainability   from   a   technical   perspective:   results,   challenges,   and   lessons   learned   will   be   included   for   interactive  discussion.     Bio:  Patricia  Lago  is  professor  at  the  Vrije  Universiteit  Amsterdam,  the  Netherlands,   where  she  leads  the  Software  and  Services  research  group  in  the  Computer  Science   Department.   Her   passion   in   research   is   to   create   software   engineering   knowledge   that   makes   software   better,   smarter,   and   more   sustainable.   Her   philosophy   is   that   research  should  be  industrial-­‐relevant  and  serve  the  final  purpose  of  being  applied   in   practice.   To   this   end,   her   research   specifically   focuses   on   the   'real'   needs   of   practice   by   establishing   collaboration   with   partners   from   both   private   and   public   sectors.   She   has   a   PhD   in   Control   and   Computer   Engineering   from   Politecnico   di   Torino  and  a  Master  in  Computer  Science  from  the  University  of  Pisa,  both  in  Italy.   She  is  member  of  the  Steering  Committees  of  IEEE/IFIP  WICSA,  ECSA  and  the  ICT4S   conference   series,   member   of   the   IFIP   2.10   Working   group   on   Software   Architecture,  the  IFIP  2.14  Working  group  on  Services-­‐based  Systems,  and  the  Dutch   Knowledge  Network  on  Green  Software.  She  has  published  in  all  major  conferences   and  journals  of  her  field.  Her  research  and  teaching  are  about  software  architecture,   software   design   and   modeling,   software   quality   assessment.   She   is   initiator   and   coordinator   of   the   Computer   Science   Master   Track   in   Software   Engineering   and   Green   IT.   She   co-­‐founded   the   Green   Lab,   a   place   where   researchers,   students   and   companies  collaborate  to  measure  the  energy  footprint  of  software  solutions.  More   information  online  at  www.cs.vu.nl/~patricia  and  www.s2group.cs.vu.nl.