What is identity?

Cloud computing is a way of delivering computer services-like storage, databases, servers, networking, and software-over the internet instead of using a personal computer or local server. Think of it as renting space and power from a big, remote computer farm that you can access from anywhere.

Let's break it down

  • Infrastructure as a Service (IaaS): You rent virtual machines, storage, and networks, just like renting a house with furniture you bring yourself.
  • Platform as a Service (PaaS): You get a ready‑made environment to develop and run apps, like a kitchen already stocked with tools and ingredients.
  • Software as a Service (SaaS): You use complete applications (email, CRM, etc.) through a web browser, similar to streaming a movie instead of buying a DVD.

Why does it matter?

  • Cost‑effective: You only pay for what you use, avoiding big upfront hardware purchases.
  • Scalable: Need more power? Add it instantly; need less? Scale down and save money.
  • Accessible: Work from any device with internet, enabling remote teams and global collaboration.
  • Maintenance‑free: The provider handles hardware upgrades, security patches, and backups.

Where is it used?

  • Businesses: Hosting websites, running databases, and storing files.
  • Developers: Building, testing, and deploying apps without managing servers.
  • Consumers: Using services like Google Drive, Netflix, or Microsoft Office 365.
  • Education & Research: Accessing powerful computing resources for simulations and data analysis.

Good things about it

  • Flexibility: Quickly try new ideas without buying equipment.
  • Reliability: Large providers have multiple data centers, offering high uptime.
  • Security (often): Experts manage firewalls, encryption, and compliance standards.
  • Environmental impact: Shared resources can reduce overall energy consumption.

Not-so-good things

  • Dependence on internet: No connection means no access to your data or apps.
  • Ongoing costs: Over time, subscription fees can add up, sometimes exceeding on‑premise costs.
  • Data privacy concerns: Storing sensitive information off‑site may raise compliance and trust issues.
  • Vendor lock‑in: Switching providers can be complex and costly if you rely heavily on proprietary services.