Warzone is on the same engine as Vanguard , but …
UPDATE ( Dec. 8 , 2021):Warzone Pacific launches from the same app , Modern Warfare client , as it did before .
The answer to this enquiry is rather ill-defined at the consequence . Call of Duty intelligibly bring up in their blog that Warzone Pacific will divvy up thesame engine and techas CoD Vanguard . Whereas in all of the late Vanguard trailers , it is cite that Warzone Pacific willrequire separate a download .

These above statements lead to two most likely scenario after theintegrationinSeason 1 :
As such , nothing is exonerated at the moment and Warzone might as well dumbfound to the Modern Warfare client . But there is a chance that Warzone may found from Vanguard .
Related : When is the new Warzone function amount out ?
Although Call of Duty Warzone has been a part of Modern Warfare since launch , it should n’t be reckon a part of it . Warzone is a separate video game in itself being a dissimilar writing style i.e. , Battle Royale .
Realistically , Warzone should be a freestanding client . It made more sense in 2020 when Warzone launched via the Modern Warfare client as the assets shared by both games were just the same .
But when the Black Ops Cold War and Warzone integration happened , thing changed . Warzone then feature assets from both games while being developed on the same railway locomotive as Modern Warfare . So when players want to switch from BOCW to Warzone , they must start a dissimilar game ( MW ) altogether .
Hopefully the developers will give some update and elucidation on this topic before long , and when they do , we ’ll ensure to update this article .
For more on Call of Duty Vanguard , visitDoes Call of responsibility : Vanguard take place in the same universe as Black Ops and Modern Warfare?on Pro Game Guides .