The 2021/22 season was also memorable as Moyes' Irons reached the UEFA Europa League semi-finals, defeating Dinamo Zagreb, Genk, Rapid Vienna, Sevilla and Olympique Lyonnais before losing to Eintracht Frankfurt.
The campaign began with the return of full stadia, and 60,000 Hammers were able to celebrate a 4-1 victory over Leicester City to get our home fixtures started, with Michail Antonio's brace seeing him overtake Paolo Di Canio as the Club's record Premier League goalscorer.
The Hammers would finish seventh in the Premier League, and qualified for the UEFA Europa Conference League - the first time in the Club's history they had secured European football in back-to-back seasons by their league position.
While the Premier League posed more problems in 2022/23 - the team flirted with relegation danger before eventually pulling clear to finish 14th - it was on the European stage that they made history throughout the campaign.
The six wins from six in the Europa Conference League group stage meant they became the first team in the competition's short history to complete a perfect group phase, with the eventual winning run of ten games setting a record for English clubs in European competition.
Victories over AEK Larnaca, KAA Gent and AZ Alkmaar in the knockout rounds in the spring set up a final against ACF Fiorentina in Prague.
There, the east Londoners ended a 43-year wait for major silverware in dramatic fashion, as Jarrod Bowen streaked clear in the 90th minute to secure a 2-1 win after Fiorentina's Giacomo Bonaventura had earlier cancelled out Saïd Benrahma's penalty.
Captain Declan Rice lifted the trophy at a jubilant Eden Arèna as around 30,000 Hammers in the Czech capital - officially 6,000 in the stadium and many more in the city - showed their delight.
An unforgettable parade through the streets of east London, from the Club's former home at the Boleyn Ground to Stratford Town Hall, saw an estimated 70,000 supporters line the route and capped a memorable season for the Club as they added a second major European trophy to their cabinet.