What is grammar?

Cloud computing is the delivery of computing services-such as servers, storage, databases, networking, software, and analytics-over the internet (“the cloud”) instead of using local hardware. You simply rent what you need, when you need it, and pay only for what you use.

Let's break it down

Think of cloud computing as three main layers:

  • Infrastructure as a Service (IaaS) provides virtual machines, storage, and networks.
  • Platform as a Service (PaaS) adds operating systems, development tools, and middleware so you can build and run applications without managing the underlying hardware.
  • Software as a Service (SaaS) delivers complete applications (like email or CRM) that you access through a web browser. Each layer builds on the one below, giving you more or less control.

Why does it matter?

Cloud computing lets individuals and businesses scale quickly, reduce upfront costs, and focus on core activities instead of maintaining hardware. It also improves reliability (data is often replicated across multiple locations) and enables collaboration from anywhere with an internet connection.

Where is it used?

  • Websites and apps that need to handle variable traffic (e.g., streaming services, e‑commerce sites).
  • Data storage and backup for personal files, photos, and enterprise databases.
  • Development and testing environments that can be spun up and torn down in minutes.
  • Artificial intelligence and big‑data analytics that require massive compute power on demand.

Good things about it

  • Cost‑effective: Pay‑as‑you‑go pricing eliminates large capital expenditures.
  • Scalable: Instantly add or remove resources to match demand.
  • Accessible: Work from any device with internet access.
  • Managed security and updates: Providers handle patches, backups, and many security measures.

Not-so-good things

  • Dependence on internet connectivity: If your connection drops, you lose access to services.
  • Potential vendor lock‑in: Migrating between providers can be complex and costly.
  • Security concerns: Storing data off‑site raises privacy and compliance questions, requiring careful configuration and oversight.
  • Variable costs: Unexpected usage spikes can lead to higher-than‑expected bills if not monitored.