When we want to test speed, we usually go to Speedtest or Fast.com. But did you know they measure speed differently for different purposes?\n\nSpeedtest.net (by Ookla) is the industry standard. It picks a server very close to you (often within your ISP network) to measure the maximum capacity of your line. It's great for testing your physical connection quality.\n\nFast.com (by Netflix) uses Netflix's own servers. Its goal is to show your real speed for video consumption. Why? Some ISPs might give high speeds on Speedtest but "throttle" speeds on video sites. If Fast.com is much lower than Speedtest, your ISP might be limiting your video bandwidth.\n\nSummary: Use Speedtest to check your line health, and Fast.com for real-world browsing and streaming quality.