The cloud is not a mystical place; it is a physical reality.

We interact with the cloud daily, yet its physical nature and security remain opaque to most users. This introduction from Harvard University's CS50 course demystifies the infrastructure behind our digital lives, exploring where the cloud actually exists and how it functions.

The cloud is a fundamental component of modern computing, yet it is often misunderstood as an abstract concept. This lecture series, led by David J. Malan, examines the technical reality behind the term, addressing the physical locations of servers, the mechanisms of data storage, and the critical question of security in a networked world.

By framing the cloud as an intellectual enterprise of computer science, the course provides a foundational understanding of the art of programming. It moves beyond the buzzword to explain the tangible systems that support our everyday digital activities.

Source: What is the Cloud?