Cloud computing refers to the delivery of IT services, including storage, computing power, and applications, over the internet. Rather than owning and maintaining physical servers or data centers, organisations can rent access to a range of services from cloud providers. Key features of cloud computing include scalability, flexibility, cost efficiency, and global access. Cloud computing is broadly categorised into three service models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). It is the foundation for modern IT architectures, supporting hybrid, public, and private cloud deployments.
Cloud computing involves renting virtual resources managed by a provider, while colocation allows businesses to house their physical servers in a third-party facility while retaining full control over the hardware.
Cloud computing is used for data storage, application hosting, disaster recovery, software development, and analytics. It supports modern workloads such as AI, machine learning, and big data.
Cloud computing offers scalability, cost savings, accessibility, and flexibility. Organisations can scale resources up or down as needed, pay only for what they use, and access services globally.


