Who does that and why? Are we talking about political jobs? or nepotism?
I’m not sure if everyone does it this way, but I identify an org. Then I look for people who work in that org or near it and find authentic ways to connect with them to learn about the position. And I just work toward a hiring manager until I’m able to spend time with them and demonstrate value.
And then eventually, if it’s a match, they have a position that I apply to and usually their decision is made before I apply.
This seems pretty common in how I hire as well as it’s really useful to be able to meet and identify people who will be a good fit. It’s much harder to sort through tons of applicants.
If you do this sanely you get more out of the event than just networking as well. Generally it's a great way to learn about new or different things you may not see at your company.
My position is comfortable, but if interest in my particular combination of skills decreases, things could get quite difficult.