What is the Cloud? A Simple Explanation

You have probably heard people say "it is saved in the cloud" and wondered what on earth that means. Do not worry — it is much simpler than it sounds. This guide explains the cloud in plain English, with no technical jargon.

What is the Cloud?

The cloud is just someone else's computer that stores your stuff over the internet.

Here is a simple way to think about it. Imagine you have a box of important photos at home. If your house floods, those photos are gone. But what if you could keep a copy of every photo in a safe, secure bank vault across town? Even if something happened at home, your photos would still be safe in that vault.

The cloud works the same way — except the "vault" is a powerful computer in a secure building, and instead of driving across town, your phone sends your photos and files there through the internet. You can get them back anytime, from any device, just by signing in.

That is really all the cloud is. A safe place on the internet where your digital things are stored.

You Already Use the Cloud

Here is the surprising part — you are almost certainly using the cloud right now without realising it.

• Email. If you use Gmail, Yahoo Mail, or Outlook, your emails are stored in the cloud. That is why you can check your email from your phone, your tablet, or a library computer. The emails are not on any single device — they are in the cloud.
• Photos. If your iPhone says "iCloud Photos" or your Android phone backs up to Google Photos, your pictures are being saved in the cloud. That means if you lose your phone, your photos are not lost.
• Netflix and YouTube. When you watch a show, the video is not stored on your television or phone. It is streaming from the cloud.
• WhatsApp and Messenger. Your message history can be backed up to the cloud so you do not lose your conversations.

So the cloud is not some mysterious new technology. It is something you have been using for years.

Cloud Storage vs Your Phone Storage

Your phone has a limited amount of storage built in — usually 64GB, 128GB, or 256GB. When that fills up, you cannot take more photos or install more apps.

Cloud storage is extra space on the internet. When you save something to the cloud, it does not take up space on your phone (or you can choose to keep it in both places).

Think of it like this:

The best approach is to use both. Keep your everyday things on your phone and let the cloud hold a backup copy of everything important.

Popular Cloud Services

There are several well-known cloud services. You likely already have at least one of these.

iCloud (Apple)

If you own an iPhone or iPad, you already have iCloud. It automatically backs up your photos, contacts, and settings. You get 5GB free, which fills up quickly. Most people upgrade to the 50GB plan for about $0.99 per month.

Google Drive (Google)

If you have a Gmail account, you have Google Drive. It stores your files, photos (through Google Photos), and emails all in one place. You get 15GB free — quite generous.

Dropbox

A popular service for storing and sharing files. You can put a document in your Dropbox and then open it from any device. The free plan gives you 2GB.

OneDrive (Microsoft)

If you use a Windows computer or have a Microsoft account, you have OneDrive. It works nicely with Word, Excel, and other Microsoft programs. You get 5GB free.

Is the Cloud Safe?

This is the question most people ask, and the short answer is yes, the cloud is very safe.

Companies like Apple, Google, and Microsoft spend billions of dollars protecting their cloud systems. Your files are encrypted, which means they are scrambled so that only you (with your password) can read them. These companies also keep multiple copies of your files in different locations, so even if one building has a problem, your data is safe elsewhere.

The biggest risk is not the cloud itself — it is a weak password. If someone guesses your password, they could access your files. Here is how to stay safe:

• Use a strong, unique password for your cloud account
• Turn on two-factor authentication (this sends a code to your phone when you sign in, so nobody can get in with just your password)
• Do not share your password with anyone

With these steps, your cloud files are arguably safer than the files sitting on your phone or computer at home.

How to Save Photos to the Cloud

On iPhone (iCloud Photos)

1. Open Settings
2. Tap your name at the very top
3. Tap iCloud
4. Tap Photos
5. Turn on Sync this iPhone (or "iCloud Photos")

Your photos will now automatically upload to iCloud whenever you are connected to WiFi. You do not need to do anything else — it happens in the background.

On Android (Google Photos)

1. Open the Google Photos app (it is usually pre-installed)
2. Tap your profile picture in the top right corner
3. Tap Photos settings
4. Tap Backup and make sure it is turned on

Your photos will now automatically upload to Google Photos whenever you are on WiFi.

In both cases, once your photos are in the cloud, you can access them from any device by signing in to your Apple or Google account.

Cloud vs WiFi vs Internet — What is the Difference?

These three terms get mixed up all the time, so let us clear it up.

• The internet is a giant worldwide network that connects computers together. It is the whole system.
• WiFi is one way to connect to the internet — wirelessly, using your home router. (Learn more in our WiFi explained guide.)
• The cloud is a service that runs on the internet. It stores your files and runs apps on powerful computers that you access through the internet.

Here is an analogy: the internet is like the road system. WiFi is your car that drives on those roads. The cloud is a shop that you drive to. You need the roads (internet) and a way to travel them (WiFi or mobile data) to reach the shop (cloud).

You might also want to read our guide on what Bluetooth is — another term that often gets confused with WiFi and the internet.

Frequently Asked Questions

Do I have to pay for cloud storage?

Every major cloud service offers a free plan. iCloud gives you 5GB, Google Drive gives you 15GB, and OneDrive gives you 5GB. For most people, the free plan is enough for emails and some photos. If you take lots of photos and videos, you may want a paid plan — these usually cost between $1 and $3 per month for extra storage.

What happens if the cloud company shuts down?

Major companies like Apple, Google, and Microsoft are not going anywhere. But if a smaller service did shut down, they would give you plenty of warning and time to download your files. This is also why it is a good idea to keep important files in more than one place — for example, on your phone and in the cloud.

Can someone see my cloud files?

No. Your files are private and protected by your password. Cloud companies encrypt your data, which means even their own employees cannot read your files. The only way someone could see them is if they had your password, which is why a strong password matters.

Do I need the internet to use the cloud?

Yes, you need an internet connection to upload files to the cloud or access files stored there. However, many apps let you download cloud files to your device so you can view them offline (without internet). The next time you connect, any changes sync automatically.

Will the cloud slow down my phone?

No. The cloud runs separately from your phone. In fact, moving old photos and files to the cloud and removing them from your phone can actually speed up your device by freeing up storage space.