WiFi
Definition
A way to connect devices to the internet without cables, creating invisible roads for data to travel through the air seamlessly and efficiently.
Use Cases
- Starbucks: Providing customer internet access in coffee shops while keeping business systems separated and secure. — Deployed in-store WiFi access points and segmented networks (guest WiFi separated from point-of-sale and internal systems) using VLANs and firewall rules; centralized monitoring and content filtering are commonly used in large retail WiFi deployments. (Improved customer experience and longer dwell time, while reducing risk by isolating guest traffic from business-critical systems.)
- Delta Air Lines: Offering in-flight WiFi so passengers can browse the internet, message, and work during flights. — Installed onboard WiFi equipment that connects aircraft to the internet via satellite links; cabin access points provide WiFi to passenger devices and route traffic through the aircraft’s connectivity system. (Enhanced passenger experience and created an additional revenue/loyalty feature through paid or sponsored connectivity options.)
- Google: Providing public WiFi in select areas to improve internet access for communities. — Used outdoor WiFi access points and backhaul connectivity to deliver internet service in public spaces; managed authentication and network operations to support many users. (Expanded connectivity options in targeted locations and improved access to online services for residents and visitors.)
Frequently Asked Questions
- What’s the difference between WiFi and Ethernet?
- WiFi is wireless (data travels through radio waves), while Ethernet uses cables. Ethernet is usually faster and more stable with lower latency, but WiFi is more convenient for mobile devices and places where running cables is hard.
- When should I use WiFi instead of cellular data (4G/5G)?
- Use WiFi when you’re indoors or near a trusted network and want a stable connection, higher speeds, or to avoid cellular data limits. Use cellular when you’re moving around, don’t trust the WiFi network, or WiFi coverage is weak.
- How much does WiFi cost?
- WiFi itself doesn’t have a per-use fee; costs come from (1) an internet service plan (monthly ISP bill), (2) WiFi hardware like a router/access point, and (3) optional extras such as mesh systems, business-grade controllers, security subscriptions, and installation. Public WiFi may be free, included with a purchase, or paid.
Category: networking
Difficulty: basic
Related Terms
See Also