Arm and x86 are two dominant processor architectures used in computers and mobile devices. x86, developed by Intel, is common in desktops and laptops, known for high performance and compatibility with a wide range of software. Arm, designed by Arm Holdings, is widely used in smartphones, tablets, and increasingly in laptops and servers due to its energy efficiency and scalability. The main difference lies in their instruction sets: x86 uses a complex instruction set computing (CISC) approach, while Arm uses reduced instruction set computing (RISC). This impacts their power consumption, performance, and application suitability. Understanding these architectures is crucial for cybersecurity, as vulnerabilities and security measures often differ between them.