[alistairSH]

Yes, breaking up a company means divesting some business units. The new businesses would have their own BoD, leadership, shareholders, etc.

The US did this with Standard Oil in 1911, Bell/AT&T in 1983. And the same laws were used against Microsoft in 2001, though the company was able to avoid a break-up.

Breaking up Google might not be the best option. Perhaps more rigorous regulation by the government would be better, similar to Microsoft. But a break up should be an option.