Even though embarking on their first-ever European campaign, Oliver Glasner's side are adapting at a rapid pace. Without key players like striker Jean-Philippe Mateta and defender Daniel Muñoz, the Eagles departed Dublin with a commanding win that virtually secures them a place in the Europa Conference League qualifying rounds.
A further victory in their next fixture against Finland's KuPS should be sufficient to seal direct entry to the last 16, especially after a previous stumble against Strasbourg.
This match provided a chance for some of Palace's fringe talent to shine. Christantus Uche, in only his second start since arriving on loan from Getafe, notched the scoring with a clinical finish. Forward Eddie Nketiah contributed a another, scoring for the second game in match.
A Shelbourne team that had finished their league season proved no match against a largely rotated Palace lineup. The visitors were already depleted by the reports that Mateta and Muñoz are out with leg problems.
Despite heavy rain in Dublin, Palace quickly took control. A flowing passing sequence in the 11th minute, initiated by Daichi Kamada's clever pass, let Nketiah to lay on Uche for a straightforward finish.
Midfielder Adam Wharton came close minutes later, driving a long-range effort over the bar. Nketiah then appealed for a penalty after bursting into the box, but the referee waved away the appeals.
Ex-Arsenal striker did not have wait long to find his goal, prodding home from a yard out after Uche's shot had struck the post.
Shelbourne were clinging on for dear life. Full-back Kameron Ledwidge was lucky to avoid a booking for two agricultural challenges on Yeremy Pino, before Chris Richards rattled the crossbar with a header from a corner.
The contest was as good as over eight minutes from half-time. Yeremy Pino meandered past some weak challenges before coolly slotting a shot past keeper Wessel Speel to make it 3-0.
After the break, coach Oliver Glasner took the chance to rest key individuals like Kamada and Wharton. Replacement Romain Esse came close to scoring his very first touch, but saw his effort blocked.
The youngster was desperately unlucky later on, seeing one shot strike off each posts before being clasped on the line. Uche also missed a sitter of a chance, showing there is still scope for improvement in his game.
A solitary concern for Palace was a second-half knock to Justin Devenny, who was forced off. This paved the way for 17-year-old forward Benji Casey to earn his first-team debut, rounding off an otherwise positive night for the visiting side.
A seasoned lifestyle journalist with a passion for luxury brands and cultural trends, sharing curated insights from global experiences.