The **MacBook Air** is a line of ultra-thin, lightweight laptops developed by Apple, first introduced in 2008 by Steve Jobs who famously revealed it by sliding the device out of a manila envelope. It was marketed as the world’s thinnest laptop at the time, setting a new standard for portability and design in computing[1][2]. The MacBook Air quickly became Apple’s default Mac laptop, appealing to a broad audience including students, professionals, and executives due to its blend of affordability, portability, and performance[1][3]. Historically, the MacBook Air started with a 13-inch model and later expanded to include an 11-inch version in 2010, which was discontinued in 2016 to focus on the 13-inch size[1][3]. The machine underwent a significant design refresh in 2018, introducing Retina displays, Touch ID, USB-C ports, and a slimmer, lighter chassis with smaller bezels, modernizing the device for contemporary users[1]. A major technological milestone came in 2020 when Apple transitioned the MacBook Air from Intel processors to its proprietary Apple Silicon chips, starting with the M1 chip, which significantly enhanced performance and energy efficiency[1][2]. Subsequent models have included the M2 (2022), M3 (2024), and the recently announced M4 (2025) chips, each bringing improvements in speed, graphical capabilities, battery life, and features like support for multiple external displays and enhanced cameras[2][6]. Notably, the 2023 update introduced a 15-inch MacBook Air variant, expanding options for users seeking larger displays while maintaining portability[2]. Currently, the MacBook Air is recognized for its long battery life—up to 20 hours with the M4 model—and its sleek design, available in multiple colors including the new Sky Blue[2]. It remains a critical product in Apple’s lineup, balancing cutting-edge technology with use