The current revolution in information technology is based on semiconductor transistors and electronics, but they have reached their speed and size limits. Modern information and communication technology demands faster electronics and communications, prompting the search for a replacement. Ultrafast laser science has enabled the development of ultrafast optoelectronics, including attosecond optical switching, which can achieve speeds up to petahertz, a billion times faster than typical semiconductor transistors. This technology allows for digital binary data encoding on ultrafast laser pulses, enabling high-speed data transfer. Recent progress in ultrafast optics includes attosecond optical switching, which controls electron dynamics in solid-state materials for faster switching. This approach uses synthesized subcycle light fields to achieve subfemtosecond switching speeds, surpassing previous nonlinear limitations. Ultrafast data encoding and communication use synthesized laser pulses to encode data in binary form, enabling high-speed, secure data transmission. This technology could revolutionize data communication, especially for deep space missions. Ultrafast optoelectronics is seen as the future of electronics due to its extreme speed, security, and potential for long-distance communication. It is expected to replace semiconductor-based electronics, offering faster computing and communication capabilities, crucial for AI and future information technology.The current revolution in information technology is based on semiconductor transistors and electronics, but they have reached their speed and size limits. Modern information and communication technology demands faster electronics and communications, prompting the search for a replacement. Ultrafast laser science has enabled the development of ultrafast optoelectronics, including attosecond optical switching, which can achieve speeds up to petahertz, a billion times faster than typical semiconductor transistors. This technology allows for digital binary data encoding on ultrafast laser pulses, enabling high-speed data transfer. Recent progress in ultrafast optics includes attosecond optical switching, which controls electron dynamics in solid-state materials for faster switching. This approach uses synthesized subcycle light fields to achieve subfemtosecond switching speeds, surpassing previous nonlinear limitations. Ultrafast data encoding and communication use synthesized laser pulses to encode data in binary form, enabling high-speed, secure data transmission. This technology could revolutionize data communication, especially for deep space missions. Ultrafast optoelectronics is seen as the future of electronics due to its extreme speed, security, and potential for long-distance communication. It is expected to replace semiconductor-based electronics, offering faster computing and communication capabilities, crucial for AI and future information technology.