CAPEX (Capital Expenditure)
CapEx is money spent to acquire, maintain, or improve fixed assets — physical or long-lived things like buildings, servers, or networking gear — that will provide value for more than one year.
- Analogy: Buying a house. You pay a large sum upfront. You own the asset. It sits on your balance sheet as something of value.
- Accounting Treatment: You do not deduct the full cost from your profit immediately. Instead, you spread the cost over the useful life of the asset through depreciation (e.g., a server with a 5-year life costs you $20K/year on your P&L, not $100K in year one).
- Examples in tech: Physical servers, networking switches, data center construction, on-premises storage arrays.
OPEX (Operating Expenditure)
OpEx is money spent on the day-to-day running of the business — electricity, rent, salaries, SaaS subscriptions, and cloud bills.
- Analogy: Renting a hotel room. You pay nightly. You own nothing when you check out.
- Accounting Treatment: You deduct the full cost from your profit immediately in the period it occurs. There is no spreading.
- Examples in tech: AWS/GCP/Azure bills, software-as-a-service licenses, engineer salaries (in most cases), support contracts.
The Cloud Shift
Moving to the cloud is fundamentally a shift from CapEx (buying servers) to OpEx (renting compute). This is not just a technical change — it is a financial reclassification that reshapes how your company's profitability appears to investors, lenders, and acquirers.