Estimation: How much do Gmail users cost Google?

Problem Categorization

This estimation falls under the Business Metrics category, focusing on cost estimation for a specific product (Gmail) within a large tech company (Google).

Step 1

Clarify the Question

• Looking at the scope of this estimation, are we considering global Gmail users or a specific region?

Why it matters: Determines the scale of our calculation Expected answer: Global users Impact on approach: Will need to consider regional differences in costs

• When we talk about costs, should we focus on direct infrastructure costs or include indirect costs like support and development?

Why it matters: Affects the comprehensiveness of our cost estimate Expected answer: Focus on direct infrastructure costs Impact on approach: Will primarily consider server, storage, and bandwidth costs

• Are we estimating the average cost per user or the total cost for all Gmail users?

Why it matters: Defines our final output metric Expected answer: Average cost per user Impact on approach: Will calculate total costs and then divide by number of users

• Should we consider both active and inactive accounts in our estimation?

Why it matters: Impacts the user base we're considering for cost calculations Expected answer: Focus on active accounts Impact on approach: Will need to estimate the number of active Gmail users