"XT" refers to various technologies, products, or companies, including XT.COM (a crypto exchange), Cadillac XT series (SUVs like XT4, XT5, XT6), Infineon's .XT technology (interconnection for vehicles/data centers), Renesas's XT oscillator chips (for stable timing), Realme XT (a smartphone), and historical tech like the IBM PC XT. To know what "XT" means in your context, you need to specify the product or industry, as it's a common abbreviation for "eXtreme Technology" or just a model identifier.