ARMv8 is a computer architecture developed by ARM Holdings that supports 64-bit processing. It enhances performance and efficiency compared to its predecessor, ARMv7, by allowing more memory access and improved computational capabilities. This architecture is widely used in smartphones, tablets, and embedded systems. One of the key features of ARMv8 is its support for both 32-bit and 64-bit applications, providing flexibility for developers. Additionally, it includes advanced security features, such as TrustZone, which helps protect sensitive data and applications. This makes ARMv8 a popular choice for modern computing devices.