The Linux kernel has introduced eBPF (Extended Berkeley Packet Filter), a lightweight, sandbox virtual machine that allows developers to run BPF bytecode directly within the kernel. This technology eliminates the need to modify kernel source code and streamlines access to existing layers. eBPF offers several advantages, including speed, low intrusiveness, security, convenience, unified tracing, programmability, expressiveness, real-time data capture, and better performance compared to traditional tracers. However, it also has some limitations, such as being restricted to Linux and a recent kernel version, and potentially limited sandboxed programs. eBPF is widely used in various fields like system administration, cybersecurity, networking, and software development for real-time system monitoring, security, networking, application performance monitoring, and versatility. It provides unprecedented insights into system behavior and performance, revolutionizing the way engineers monitor systems, troubleshoot issues, and optimize performance.