What is field?

Cloud computing is the delivery of computing services-like servers, storage, databases, networking, software, and analytics-over the internet (“the cloud”) instead of using a personal computer or local server. You rent what you need, when you need it, and pay only for what you use.

Let's break it down

  • Infrastructure as a Service (IaaS): You get virtual machines, storage, and networks, just like renting raw hardware.
  • Platform as a Service (PaaS): You receive a ready‑to‑use environment for building and deploying apps without managing the underlying hardware.
  • Software as a Service (SaaS): You use complete applications (like email or CRM) that run in the cloud, accessed through a web browser.
  • Public, Private, and Hybrid Clouds: Public clouds are shared resources from providers like AWS; private clouds are dedicated to one organization; hybrid clouds combine both.

Why does it matter?

Cloud computing lets individuals and businesses scale quickly, reduce upfront hardware costs, and focus on core activities instead of maintaining servers. It also enables global access, automatic updates, and better disaster recovery.

Where is it used?

  • Streaming services (Netflix, Spotify)
  • Online collaboration tools (Google Workspace, Microsoft 365)
  • E‑commerce platforms (Shopify, Amazon)
  • Mobile apps that store data in the cloud
  • Enterprise IT for hosting websites, databases, and virtual desktops

Good things about it

  • Scalability: Add or remove resources instantly.
  • Cost‑efficiency: Pay‑as‑you‑go model reduces waste.
  • Accessibility: Access data and apps from anywhere with internet.
  • Reliability: Providers offer high uptime and built‑in backups.
  • Speed of innovation: Developers can launch and test ideas faster.

Not-so-good things

  • Dependence on internet: No connection means no access.
  • Ongoing costs: Over‑use can lead to higher-than‑expected bills.
  • Security concerns: Data is stored off‑site; proper safeguards are essential.
  • Vendor lock‑in: Moving services between providers can be complex.
  • Limited control: You rely on the provider’s hardware and policies.