The widespread adoption of cloud-based applications has been a primary driver for large-scale IT service delivery to students aged 5 to 18 (K-12 education). Educational institutions have increasingly integrated platforms like Google Workspace for Education and Microsoft 365 for Education into their curricula. These services facilitate collaborative learning, content delivery, and administration, necessitating robust network infrastructure and often 1:1 device programs (e.g., Chromebooks). This digital transformation supports both in-person and remote learning models, making cloud applications the central technological force in modern K-12 education.

B. Online torrent sites: These are associated with peer-to-peer file sharing, often for unauthorized content, and are typically blocked on educational networks, not a driver of sanctioned services.

C. Streaming music: This is a consumer entertainment service, not a core educational tool, and its use is generally restricted or deprioritized on school networks to preserve bandwidth.

D. Wearable body sensors: This is a niche Internet of Things (IoT) application, primarily for health or specialized research, and is not a large-scale technology driver for the general K-12 student population.

1. CWNP, CWISA-103 Certified Wireless IoT Solutions Administrator Official Study Guide, 1st ed., 2021.

Chapter 11, "IoT Verticals," discusses the impact of IoT and related technologies on specific industries, including education. The chapter details how "Smart Classrooms" rely on connected devices and cloud platforms to deliver digital curricula and manage student activities, identifying this as a key trend.

2. Al-Zoube, M., "Cloud Computing for Education," in E-Learning - Engineering, On-Job Training and Interactive Teaching, IntechOpen, 2010.

Chapter 1, Section 3, "Cloud Computing in Education," explains that cloud applications provide educational institutions with access to a wide range of tools for teaching and learning, such as collaborative document editing and learning management systems, which has driven their adoption in K-12 and higher education. (DOI: 10.5772/9613)

3. Gonzalez-Martinez, J. A., et al., "Cloud computing and education: A state-of-the-art survey," Computers & Education, vol. 80, pp. 132-151, Jan. 2015.

The paper's analysis highlights that the most significant impact of cloud computing in the educational sector is through Software as a Service (SaaS) applications, which include learning management systems and collaborative tools that are fundamental to serving the K-12 student demographic. (DOI: 10.1016/j.compedu.2014.08.017)