The internet and cloud services power the modern workplace. Understanding how they work — and the difference between them — makes you a more effective, confident employee.
Clearing Up Confusion
Several terms get used interchangeably in offices but mean very different things.
The global network connecting billions of devices. It's infrastructure — like a road system.
Software you use to view content on the internet: Chrome, Firefox, Safari, Edge. Just one tool for accessing the internet.
The wireless connection from your device to a router. Wi-Fi is local — you can have Wi-Fi without internet access.
The router's upstream connection via an ISP. You can have internet without Wi-Fi (via Ethernet cable).
Files and services hosted on remote servers. Google Drive, OneDrive, Zoom, Salesforce — all cloud services.
Software installed on your computer. Works without internet. Files live on your own hard drive.
Every major AI tool — ChatGPT, Claude, Copilot, Gemini — is a cloud service. When you type a prompt, it travels over the internet to remote servers loaded with GPUs (Module 1), gets processed, and the response streams back. This means: no internet = no AI tool access. High latency = slow AI responses. And critically, every prompt you send travels to someone else's servers — which is why the cybersecurity module (Module 5) covers what data you should and shouldn't share with AI tools.
Interactive — Click to Decode
A URL (Uniform Resource Locator) is a web address. Every part has a specific meaning.
https://www.company.com/reports/q3-2024?format=pdf
Security tip: Always check the protocol (https vs http) and the domain before entering passwords. Phishing sites mimic real URLs: paypa1.com vs paypal.com.
Cloud Services at Work
AI-Specific
Now that you understand the difference between local software and cloud services, there's an important distinction to make specifically for AI: not all AI tools work the same way. Some run entirely on remote servers; others run on your own machine. The difference matters for performance, privacy, cost, and capability.
The AI runs on the provider's servers. You access it through a browser or app, and your prompts travel over the internet to be processed remotely. This is how most people interact with AI today.
Examples: ChatGPT (OpenAI), Claude (Anthropic), Copilot (Microsoft), Gemini (Google)
Pros: Powerful models, no hardware requirements on your end, always up to date
Cons: Requires internet, your data leaves your machine, subscription costs, provider controls the model
Hardware needed: Any device with a web browser
The AI model is downloaded and runs entirely on your own computer. Nothing leaves your machine — your prompts and data stay local. This requires more technical setup and more powerful hardware.
Examples: Ollama, LM Studio, llama.cpp, GPT4All
Pros: Full data privacy, works offline, no subscription, you control the model
Cons: Needs a powerful GPU and substantial RAM (Module 1), smaller models than cloud, more setup effort
Hardware needed: Modern computer with a capable GPU and 16+ GB RAM
This is a spectrum, not a binary. Some tools blend both: Microsoft Copilot integrates cloud AI into local Office applications; some coding assistants run a small model locally but send complex queries to the cloud. The key question is always the same: where is the computation happening, and where is your data going? That question ties directly back to the hardware concepts in Module 1 (is your GPU powerful enough?) and forward to the security concepts in Module 5 (should this data leave your machine?).
I'm a cloud AI tool — when you type a prompt to me, it travels to Anthropic's servers, gets processed on their hardware, and the response comes back over the internet. I have no ability to run on your local machine. Tools like Ollama let you run smaller, open-source models locally instead. The tradeoff is real: I'm generally more capable, but your data leaves your computer. A local model is less powerful but keeps everything private. There's no single right answer — it depends on what you're doing and what data is involved.
How Networks Work
When you type google.com and press Enter: (1) Your browser asks a DNS server to translate "google.com" into an IP address like 142.250.80.46. (2) Your computer sends a request through your router, through your ISP, across the internet. (3) Google's server processes the request and sends data back. (4) Your browser renders the page. This round trip typically takes 20–100 milliseconds.
Every device on the internet has an IP address — a unique identifier like 192.168.1.1. DNS (Domain Name System) is like a phone book: it translates human-readable names (google.com) into IP addresses. When IT says "flush your DNS," they're clearing a local cache to fix connectivity issues.
A VPN (Virtual Private Network) creates an encrypted tunnel from your device to a company server. When working from home, a VPN makes your connection appear to come from the company network — giving you access to internal resources. It also encrypts your traffic, protecting it on public Wi-Fi. Your IT department provides VPN software and credentials.
Bandwidth = how much data can flow at once (highway lane width). Measured in Mbps. High bandwidth = fast downloads. Latency = how long for data to make a round trip (travel time). Measured in milliseconds. High latency = lag in video calls. You can have high bandwidth but high latency (satellite internet) — fast downloads but laggy video calls.
Workplace Connection Issues
| Symptom | Likely Cause | First Step |
|---|---|---|
| Nothing loads at all | No internet or network connection | Check Wi-Fi icon — are you connected? |
| One website won't load | Site may be down, or DNS issue | Try another browser; check downdetector.com |
| Video call is choppy | High latency or low bandwidth | Close other tabs; try Ethernet cable |
| Can't access company files from home | VPN not connected | Connect to company VPN first |
| Email sends but won't receive | Mailbox full or mail server issue | Check mailbox storage; check spam folder |
| Websites load very slowly | Weak Wi-Fi signal | Move closer to router; restart router |
Real Scenarios
The shared drive is on the company's internal network — inaccessible from outside without a VPN. Connect to your company VPN first, then try accessing the drive again. This is one of the most common remote work issues.
Upload to OneDrive or Google Drive → Share → get a shareable link → send the link by email. Sharing links is better than attachments — saves storage, ensures the latest version, and lets you control access.
The problem is your connection. Steps: (1) Close other browser tabs. (2) Move closer to router. (3) Plug into Ethernet if possible. (4) Lower camera resolution in settings. (5) Restart router. Video calls need ≥3 Mbps and under 150ms latency.
OneDrive is a sync client. When you save, the OneDrive app uploads to Microsoft's servers. Your colleague's app detects the new file and downloads it automatically. This happens in near real-time as long as both computers are online.
speedtest.net and note your download speed (bandwidth) and ping (latency). Is it fast enough for video calls (≥3 Mbps, <150ms)?Check Your Understanding
Answer all questions to complete this module.
1. You're at a coffee shop connected to Wi-Fi, but no websites load. What's most likely happening?
2. What does a VPN do when you work from home?
3. When you send a prompt to ChatGPT or Claude, where does the processing happen?
4. Your company has strict data privacy rules. You need to use an AI tool to analyze sensitive employee records. Which approach best addresses the privacy concern?