It's whatever each company makes of it, which is why definitions vary. It can range from explicit efforts to actively reach out to candidates from schools with

It's whatever each company makes of it, which is why definitions vary. It can range from explicit efforts to actively reach out to candidates from schools with students predominantly from historically-disadvantaged groups, to outright "no hiring of white men this quarter" (which is one of the more egregious documented cases, https://www.theverge.com/2018/3/2/17070624/google-youtube-wilberg-recruiter-hiring-reverse-discrimination-lawsuit https://www.theverge.com/2018/3/2/17070624/google-youtube-wi...). What I think most conservatives think it is: When choosing between a more qualified white cis man and a less qualified "diverse" candidate, some companies will pick the latter specifically due to DEI policies. I am very sure this is actually happening (see also e.g. the above source). Turns out people don't like being explicitly discriminated against, even if they're from a majority group.