Ternus is taking over a company dealing with the rise of AI, shortages of RAM and other components due to that growth in AI, and a political and economic situation that is only getting more complicated as time passes.

John Ternus takes the helm of a $4 trillion tech giant, but it comes with challenges as Apple faces down the RAM shortage, AI launch delays and the foldable phone market.

While Tim Cook's legacy and John Ternus's effectiveness will be studied for years, right now Apple is making a change of CEO seem effortless. But never doubt that this will be a sea change for the company,