Declan Rice and Said Benrahma capped the London Stadium's first home game in a European finals with the goals in West Ham's 2-0 victory over Rapid Vienna.
The Hammers kept up their perfect start to life in Group H with a convincing win over last season's Austrian Bundesliga runners-up, and could well have won by more as both Craig Dawson and Rice headed against the woodwork with the score goalless.
West Ham's recent history in continental competition is so sparse their last home goal in Europe came from Frank Lampard in 1999 and Rice's winner on the half-hour mark channelled the spirit of the retired midfielder, with his run from deep found by Michail Antonio to leave him a back-post tap-in.
That goal sparked aggressive scenes among the Rapid fans, who mounted the barriers at the front of their stand and needed stewards to hold them back from reaching the nearest section of West Ham supporters.
Fears of a repeat performance after half-time when a penalty was awarded against Ben Johnson for tripping Marco Grull inside the West Ham penalty area were calmed when referee Tobias Stieler overturned his decision once he had watched the VAR review monitor.
The visitors, already struggling in their own domestic league, offered little else of note before Benrahma slotted in from an injury-time corner to allow the Hammers to celebrate a second win in a row to take them three points clear at the top of their group.
West Ham: Areola (6), Johnson (7), Dawson (6), Diop (6), Cresswell (8), Noble (5), Rice (9), Benrahma (8), Yarmolenko (7), Antonio (7), Vlasic (5).
Subs: Bowen (7), Soucek (6), Lanzini (6), Fornals (7).
Rapid Vienna: Gartler (7), Aiwu (6), Greiml (5), Wimmer (5), Ullmann (6), Petrovic (6), Grahovac (6), Arase (5), Knasmullner (5), Fountas (5), Kara (6).
Subs: Kitagawa (5), Grull (6), Stojkovic (5), Auer (6).
Man of the match: Declan Rice
Hammers' European dream continues 100-per-cent start
A statue of West Ham legends Bobby Moore, Sir Geoff Hurst and Martin Peters was unveiled ahead of Thursday's game in tribute to their victorious Cup Winners' Cup campaign in 1965, as this Hammers generation set about making European history of their own and the London Stadium made its Europa League bow.
There were less than seven minutes gone when Rice rose for a header from Cresswell's free-kick and smacked the woodwork from 12 yards. It would be another 20 before they went close again, when Dawson, from a Cresswell corner, nodded onto the other post.
It was third time lucky two minutes later as Rice kept up his own 100-per-cent record in this year's Europa League, feeding Andriy Yarmolenko to flick the ball into the box for Antonio, who spotted the midfielder's run from deep and left him a simple finish.
Dawson nodded over another excellent Cresswell delivery with the half's final chance, before firing another wayward header wide after the break from the same source.
A slew of first-choice substitutions for the final 20 minutes threatened to pile more pressure on the limited visitors as Tomas Soucek, Jarrod Bowen and Pablo Fornals were introduced, but within minutes the visitors were handed a massive opportunity to level.
Referee Stieler penalised Johnson's slide towards Grull moments before the substitute fell inside the area, but after reviewing the VAR monitor noticed the winger had tripped himself up and overturned his original decision.
That seemed to liven the hosts up again, and with 10 minutes left Bowen should have wrapped things up when rounding Paul Gartler before firing over a gaping goal on his right foot.
Deep into added time, the icing on the cake did follow, as Bowen turned provider for Benrahma on the left of the area, and the Algerian kept up his fine scoring form this season with a smart finish inside the far post.
What the manager said...
West Ham manager David Moyes: "The performance, I wouldn't have put it as high as some of the others we've had this season, but we're still learning how to evolve at this level of football.
"We did the job, we were worthy winners, we hit the woodwork twice in the first half, but it took a really well-worked goal."
On bottles being thrown between both groups of fans: "We want to be a club in Europe and there regularly, and we want to behave correctly.
"We don't want that reputation, we want to be challenging and be invited into these competitions and be seen as a club who are welcomed when we travel to Europe. I don't know how it started, I don't know where it started."
Opta facts: Hammers continue fine form
- West Ham have won eight and lost just one of their last 12 games in all competitions (D3), after losing three out of four directly before that (in April and May this year).
- Rapid Wien have lost on five of their six visits to England in European competition, winning the other game (3-2 v Aston Villa in 2010).
- Declan Rice is the first West Ham player to score at home in a major European game since Frank Lampard against NK Osijek in the UEFA Cup in September 1999.
- Declan Rice is just the third player to score on both of his first two European appearances for West Ham (excl. qualifiers), after David Cross in 1980 and Brian Dear in 1965.
West Ham host Premier League new boys Brentford at the London Stadium on Sunday; Kick-off at 2pm.
Rapid Vienna's next game is a relegation six-pointer against the only side below them in the Austrian Bundesliga, WSG Tirol, also on Sunday; Kick-off at 1.30pm.