How does Google Ads auction-time bidding differ from Search Ads 360 intra day bidding?

Google Ads auction-time bidding optimizes bids in real-time, meaning it evaluates contextual signals at the moment of each auction to set the most appropriate bid. This allows for highly dynamic and precise bidding. In contrast, Search Ads 360 intra-day bidding adjusts bids several times throughout the day based on performance data and predefined rules, but it does not operate at the individual auction level. It's a more frequent update cycle than daily bidding, but not real-time. The other options are incorrect because Google Ads auction-time bidding is real-time, not just several times a day, and Search Ads 360 intra-day bidding adjusts bids, it doesn't override device/location adjustments or set up cross-engine portfolio strategies in the way described.