Go, often referred to as Golang, is an open-source programming language developed by Google. It was designed with simplicity and efficiency in mind, making it ideal for modern software development. Go excels in performance, thanks to its statically-typed nature and efficient garbage collection. Its syntax is clean and straightforward, allowing developers to write clear and maintainable code. Go is particularly known for its built-in support for concurrency, making it perfect for developing scalable and high-performance applications, especially in cloud computing and microservices architecture.