How Many Servers Do You Need?
mediumBack-of-envelopeVery commonly asked~15 minHLD roundHiring managerBar raiserSDE-2 and upAmazonGoogleFlipkartSwiggyUberCapacity & EstimationObservability
The question, as asked
“We're launching this in three months and expecting a million users in the first week. How much infrastructure do we need, and what will it cost?”
Your answer, first
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This one is listed because it comes up constantly — the three-depth answer, follow-ups and red flags are being written. Attempt it above anyway; that part works, and the guides below cover the ground the drill will.