Rust is a modern programming language developed to provide high performance while ensuring memory safety and preventing common programming errors like buffer overflows and data races. It achieves this through a unique system of ownership and borrowing, which enforces strict compile-time checks without sacrificing speed. Rust is widely used in systems programming, cybersecurity, and applications where reliability and security are critical. Its growing popularity stems from its ability to combine the efficiency of low-level languages like C++ with strong safety guarantees, making it a preferred choice for secure software development.