There's about 4 themeparks of regulations and "we hope this is an adequate ritual" packed into all the stuff those banners need to check and keep up to date when regulations (or the way they are enforced) change.
So third parties specialize in it, and we buy the banner have the company behind them trawl our sites and pull in the info about all the cookies we don't even keep taps on.
And when we've installed them, we all try not to get involved with them again. Because it is the least fun and rewarding area of any web dev day and tinkering with them just might get you invited to a whole series of GDPR review meetings.
So third parties specialize in it, and we buy the banner have the company behind them trawl our sites and pull in the info about all the cookies we don't even keep taps on.
And when we've installed them, we all try not to get involved with them again. Because it is the least fun and rewarding area of any web dev day and tinkering with them just might get you invited to a whole series of GDPR review meetings.