Welcome to the 8th edition of XATA. The main goal of the eighth national conference XATA 2010 is the creation of a space for the discussion about XML, its different usages and all the associated technologies (http://xata.fe.up.pt). This XATA edition will be hold in ESEIG (Escola Superior de Estudos Industriais e de Gestão), a school from IPP (Instituto Politécnico do Porto), in Vila do Conde, Portugal. The conference is open to technicians and interested users in this subject, coming from the academic or the industrial world.         We invite you to send an article proposal for posterior presentation in the conference, or just participating in the conference. Articles should be written in English but the presentations can be done in Portuguese, Galician, Spanish or English.