How will it affect Meta?
Technology author James Ball told BBC News that Meta executives would be relatively pleased with this settlement.
"On one level, $725m is a huge amount of cash - but Meta is such a large company that this figure represents less than three days of its revenue," he said.
"Meta is keen to present privacy issues such as those raised by the Cambridge Analytica controversy as historical - obviously it remains to be seen whether that's the case - as if there are more settlements in the future, that could start to have a more serious impact on the company."