Cloud computing is the delivery of computing resources, servers, storage, databases and software, over the internet on a pay-as-you-go basis. Rather than buying physical machines and keeping them running yourself, you rent capacity from a provider and only pay for what you actually use.
Think of it like electricity. You don’t build a power plant in your basement to charge your laptop. You plug into the grid and pay per kilowatt-hour. Cloud works the same way: the provider runs the data centers, and you draw exactly as much compute as your app needs this month. When traffic spikes during a campaign, you scale up; when it quiets down, you scale back and the bill drops.
The model comes in layers. With Infrastructure as a Service you rent raw servers and manage them yourself. With Platform as a Service the provider handles the operating system and runtime for you. And SaaS goes all the way, delivering finished software like Gmail or Slack straight through the browser. Most companies mix all three.
The pay-per-use model is a real strength, but it cuts both ways. A misconfigured job or a sudden traffic spike can run up a surprising bill, and data stored in one provider’s format can be expensive to move out later, a stickiness people call vendor lock-in. So teams watch their spending closely and avoid leaning on features only one cloud offers. The upside is that a two-person startup can run on the same infrastructure as a bank, without ever owning a server.
At TopDevs we pick the cloud layer that fits each client’s budget and team, so you get the reliability of a big provider without paying for capacity or expertise you don’t need.
