How you actually rent and run computers in “the cloud.” Nine short lessons, no jargon left untranslated — the third in the set.
Lesson 1
What “the cloud” actually is
Let’s pop the balloon straight away: “the cloud” is just other people’s computers, in other people’s buildings, that you rent by the month over the internet. There is no cloud. There’s a data centre (last course), full of servers (the course before), and you rent a slice.
The clever bit isn’t mystical — it’s the renting model. Instead of buying a £3,000 computer, plugging it in under a desk and looking after it forever, you rent exactly what you need, pay monthly, and hand the hardware headaches to someone else.
The analogy for this course: cloud hosting is renting instead of buying. Like leasing a car instead of buying one, or renting an office instead of buying a building — you get the use of it, someone else owns and maintains it, and you can change your mind more easily.
Takeaway: “the cloud” = renting computers by the month instead of buying your own. That’s the whole idea.
Lesson 2
Why rent instead of buy?
Renting (the cloud) beats buying your own machine for almost every small business, for a handful of down-to-earth reasons:
No big up-front cost. A monthly bill instead of a lump sum.
Someone else does the heavy lifting — power, cooling, security, replacing failed hardware. Not your problem.
You can grow or shrink quickly. Need more power next month? A few clicks, not a new purchase. (This is the big one — it’s called “scaling.”)
Reliability built in — a proper host runs in a redundant data centre you couldn’t match under a desk.
The trade-off: you don’t own it, and over many years renting can cost more than buying. For a growing business that values flexibility and reliability, renting almost always wins — which is why most businesses are in the cloud.
Takeaway: renting means no big up-front cost, no hardware babysitting, and the freedom to grow fast. The trade-off is you don’t own it.
Lesson 3
How much do they look after? Tap to compare
Cloud hosting comes in levels — the difference is simply how much the host handles vs how much you do. Tap each to see who does what.
🍽️
Shared hosting
they do the most
🏠
VPS (us)
split the work
🏢
Dedicated
whole machine
🤝
Managed
they run it for you
Pick one ↑
From “they handle almost everything” (shared) to “you get a whole machine” (dedicated) — with your VPS in the sensible middle.
Takeaway: the levels differ by how much control you get and how much they manage. Most business sites sit on a VPS — a private slice, with shared responsibilities.
Lesson 4
Scaling — the cloud’s superpower
Scaling just means changing how much computer you’re renting as your needs change. It’s the main reason renting beats buying, and it comes in two flavours:
Scaling up (“vertical”) — make your one machine bigger: more power, more memory, more storage. Adding a GPU for AI is the classic example — a bigger “engine” bolted to the machine you already rent.
Scaling out (“horizontal”) — add more machines that share the load. This is how huge websites cope with millions of visitors.
The beauty is you can do it when you need it and pay for it then — not guess years ahead and buy a machine that’s too big or too small.
Like a growing shop: scaling up is moving to a bigger unit; scaling out is opening a second branch. The cloud lets you do either next week, not next year.
Takeaway: scaling = renting more (or less) as you grow. Adding a GPU for AI is “scaling up” — a bigger engine on the same machine.
Lesson 5
What you’re actually paying for
A cloud bill is built from a few simple ingredients. Once you know them, the pricing pages stop being scary:
Ingredient
In plain words
Compute (CPU/GPU)
The “thinking” power — how many workers you’re renting. GPUs cost the most.
Memory (RAM)
The size of the working desk.
Storage
The warehouse — how many gigabytes you’re keeping. Fast storage costs more than slow.
Bandwidth
How much data goes in and out over the internet each month.
Extras
Backups, a fixed address (“static IP”), management, support.
Roughly, you pay more for a bigger machine, more storage, more traffic, and more hand-holding. Have a play:
Very rough monthly ballpark:
£200–350 / month
Illustration only — real prices vary hugely by provider. The point is to see what drives the bill, then ask them for a proper quote.
Takeaway: a cloud bill = compute + memory + storage + bandwidth + extras. GPUs and management are the big cost drivers. Always get an itemised quote.
Lesson 6
Where your data lives, and why it matters
When you rent in the cloud, your data physically sits in whichever data centre the provider uses — and that could be anywhere in the world. For most people that’s fine. For us, it’s a serious question.
If your business holds personal or sensitive data — customer records, ID documents, anything covered by data-protection law — it strongly matters where that data is kept. Keeping it in the UK (or EU) avoids a raft of complications. This is called data residency, and it’s a perfectly reasonable thing to insist on.
Like choosing a filing office: you wouldn’t post your clients’ confidential papers to be stored in a warehouse on the other side of the world under unknown rules. You’d keep them locally, under law you understand.
Takeaway: in the cloud, your data physically lives somewhere — and for us that somewhere should be the UK. Always ask.
Lesson 7
The catches to watch for
Renting in the cloud is brilliant, but there are a few traps worth knowing before you sign:
“It’s the host’s job” — often it isn’t. On many plans, you are responsible for updates, security and backups, not them. Know which it is (managed vs unmanaged).
Surprise bills. Some clouds charge for every scrap of data leaving the server (“egress”) or for extras you didn’t notice. Ask for a fixed monthly price where you can.
Lock-in. Once your stuff is on one provider, moving it elsewhere can be a faff. Not fatal, but ask how hard it is to leave.
Shared when you needed dedicated. A cheap “shared” option can mean noisy neighbours slowing you down and less privacy — which is why, for AI, you’d want a GPU dedicated to you.
Takeaway: know who’s responsible for backups & security, pin down a fixed price, and check how easily you could leave.
Lesson 8
Bringing it home: your business in the cloud
Here’s the whole picture in the words you’ve now got:
You rent your computer rather than owning one — that’s being “in the cloud.”
Usually on a VPS — a private slice of a machine in a data centre.
Need more power (say, a GPU for AI)? You scale it up — a bigger engine on the machine you already rent.
If you hold sensitive data, you insist it stays in the UK and, for AI, on your own kit.
And you pin down a clear monthly price, who does backups & security, and room to grow.
So “cloud hosting” was never scary. It’s renting a private slice of a well-run building, and paying to make it bigger when you need to — while keeping the confidential bits firmly in your own hands.
Takeaway: you rent a private slice (VPS) in the cloud, scale it up when you need to, and keep control of the sensitive data. Simple.
Check yourself
A quick five-question quiz
Instant feedback on each.
0 / 5
That completes the trio. You now understand a server, the building it lives in, and how you rent and run it in the cloud — more than enough to be the sharpest non-techie in any hosting conversation.