thumb|alt=Photograph of the opening act during the 2011 contest; Stefan Raab performs with a band while multiple women dressed as Lena dance behind them while waving the flags of the participating countries|The opening act during the final of the in Düsseldorf, Germany Each show typically begins with an opening act consisting of music and/or dance performances by invited artists, which contributes to a unique theme and identity created for that year's event; since 2013, the opening of the contest's final has included a "Flag Parade", with competing artists entering the stage behind their country's flag in a similar manner to the procession of competing athletes at the Olympic Games opening ceremony. Viewers are welcomed by one or more presenters who provide key updates during the show, conduct interviews with competing acts from the green room, and guide the voting procedure in English and French. Competing acts perform sequentially, and after all songs have been performed, viewers are invited to vote for their favourite performances—except for the performance of their own country—via telephone, SMS and the official Eurovision app. The public vote comprises 50% of the final result alongside the views of a jury of music industry professionals from each country. An interval act is invariably featured during this voting period, which on several occasions has included a well-known personality from the host country or an internationally recognised figure. The results of the voting are subsequently announced; in the semi-finals, the 10 highest-ranked countries are announced in a random order, with the full results undisclosed until after the final. In the final, the presenters call upon a representative spokesperson for each country in turn who announces their jury's points, while the results of the public vote are subsequently announced by the presenters. In recent years, it has been tradition that the first country to announce its jury points is the previous host, whereas the last country is the current host (with the exception of , when the United Kingdom hosted the contest on behalf of Ukraine, which went first). The qualifying acts in the semi-finals, and the winning delegation in the final are invited back on stage; in the final, a trophy is awarded to the winning performers and songwriters by the previous year's winner, followed by a reprise of the winning song. The full results of the competition, including detailed results of the jury and public vote, are released online shortly after the final, and the participating broadcaster of the winning entry is traditionally given the honour of organising the following year's event.
thumb|alt=Photograph of the opening act during the 2011 contest; Stefan Raab performs with a band while multiple women dressed as Lena dance behind them while waving the flags of the participating countries|The opening act during the final of the in Düsseldorf, Germany Each show typically begins with an opening act consisting of music and/or dance performances by invited artists, which contributes to a unique theme and identity created for that year's event; since 2013, the opening of the contest's final has included a "Flag Parade", with competing artists entering .the stage behind their country's flag in a similar manner to the procession of competing athletes at the Olympic Games opening ceremony. Viewers are welcomed by one or more presenters who provide key updates during the show, conduct interviews with competing acts from the green room, and guide the voting procedure in English and French. Competing acts perform sequentially, and after all songs have been performed, viewers are invited to vote for their favourite performances—except for the performance of their own country—via telephone, SMS and the official Eurovision app The public vote comprises 50% of the final result alongside the views of a jury of music industry professionals from each country. An interval act is invariably featured during this voting period, which on several occasions has included a well-known personality from the host country or an internationally recognised figure. The results of the voting are subsequently announced; in the semi-finals, the 10 highest-ranked countries are announced in a random order with the full results undisclosed until after the final. In the final, the presenters call upon a representative spokesperson for each country in turn who announces their jury's points, while the results of the public vote are subsequently announced by the presenters. In recent years, it has been tradition that the first country to announce its jury points is the previous host, whereas the last country is the current host (with the exception of , when the United Kingdom hosted the contest on behalf of Ukraine, which went first). The qualifying acts in the semi-finals, and the winning delegation in the final are invited back on stage; in the final, a trophy is awarded to the winning performers and songwriters by the previous y,ear's winner, followed by a reprise of the winning song. The full results of the competition, including detailed results of the jury and public vote, are released online shortly after the final, and the participating broadcaster of the winning entry is traditionally given the honour of organising the following y.ear's event