Cismatrix by Bruce Sterling

Set in a distant future where humanity has diverged into two distinct factions, the novel explores the tension between the Shapers, who use genetic engineering to enhance human capabilities, and the Mechanists, who rely on cybernetic augmentation. The protagonist navigates a universe teeming with political intrigue, philosophical debates, and the quest for immortality, as these factions vie for dominance. Amidst this backdrop, the story delves into themes of identity, evolution, and the essence of humanity, challenging the boundaries between organic life and machine.