I think it is reasonable to assume they mean “desktop apps”. Windows is a platform to run desktop apps and that is the area where it leads. Windows laptops also

I think it is reasonable to assume they mean “desktop apps”. Windows is a platform to run desktop apps and that is the area where it leads. Windows laptops also run desktop apps. Laptop apps is not a category. The other big buckets are mobile and server but “mobile” as an application category does not refer to laptops.