Political disengagement and declining trust have become main areas of concern for parliaments in Europe, leading to a considerable reinforcement of public engagement activities. The European Parliament is a prime example of an institution where the need to strengthen the link with citizens became a key priority, in particular following the Lisbon Treaty's reinforcement of the parliament's powers and visibility. This article analyses the decision-making processes this Parliament has put in place to meet the public engagement agenda. It is mainly based on elite interviews with officials and representatives. We show that political will was key to move forward the public engagement agenda, and that new media has become a core element of this strategy.Key words: public engagement; trust in parliament; European Parliament; internet and parliament.Faced with rising levels of p o l i t i c a l d i s e n g a g e m e n t a n d a c c u s a t i o n s o f l a c k o f t r a n s p a r e n c y , parliaments across Europe have considerably reinforced their public engagement activities over the last decade, with many embedding this dimension into their overall strategies. As parliamentary public engagement has grown, the literature has started to analyse the effectiveness of the outputs produced by parliaments, such as petition systems or simply parliamentary websites. Namely, studies have assessed over a decade now the effectiveness of parliamentary websites as a public engagement tool, in the possibilities of information and interaction these offer (Norris, 2001;Trechsel et al, 2003;Setälä and Grönlund, 2006; Global Centre for ICT, 2008Griffith and Leston-Bandeira, 2012; J os hi and Ros enf i el d, 2013), with many more s t udi es f ocus i ng on t he effectiveness of individual MPs' websites (e.g. Zittel, 2003;Ward and Lusoli, 2005;Chappelet and Kilchenmann, 2006;Vicente-Merino, 2007;Francoli and Ward, 2008;Jackson, 2008). In this article we propose instead to analyse the processes in place that lead to the decisions behind public engagement outputs, such as a parliamentary website. Adopting the European Parliament as our case study, we explore the processes in place to support the development of public engagement and its inherent challenges. Whilst some of the literature has considered the structures in place to move forward the engagement agenda (Kelso, 2007;Leston-Bandeira, 2007b;De Rosa, 2009;Clark and Wilford, 2012; Walker 2012), we still need to understand better what processes lead to the development of public engagement, to ascertain who takes decisions regarding the format of public 2 engagement, the inherent challenges and what this can teach us in terms of developing effective public engagement. It is important in particular to identify the challenges in place to be able to set realistic expectations; but also to identify enablers of effective implementation of public engagement.Focusing on the output of a parliamentary website, we enquire into the decision-making process in place behind the decisions made ...