This chapter focuses on how laser-based communication has fundamentally reshaped the way we connect. Replacing radio waves with light has led to communication networks that are faster, more reliable, and capable of handling enormous data loads. While the chapter touches on wireless laser links in free space, its main emphasis is on fiber optic communication which now is the backbone of the global internet. It also explains how the integration of lasers with mobile technologies enables real-time connectivity and data access across the globe, revolutionizing the digital experience for individuals everywhere.