Google CEO Sundar Pichai speaks at Google I/O.Christoph Dernbach/picture alliance via Getty ImagesGoogle's 2024 saw many changes in the executive ranks.As the company doubled down on AI, it got a new CFO and a new head of search.There were also several leadership changes in the Cloud unit.If Google's 2024 could be neatly summed up, it would be: AI, AI, AI.