FinOps: Mastering Cloud Costs

Cloud is expensive. A Cloud Architect's success is measured not just by uptime, but by Cost Efficiency. If you aren't optimizing, you are wasting 30% of your budget.

1. Reserved Instances & Savings Plans

If you know you will need a server for 1 year, commit to it! You can get up to 72% discount compared to "On-Demand" pricing. It's like a long-term lease vs a daily hotel rate.

2. Spot Instances

Huge discounts (up to 90%) on "Spare" cloud capacity. The catch? The cloud provider can take the server back with only a 2-minute warning. **Architect Tip:** Use Spot for stateless workloads, batch processing, or dev environments where a sudden restart doesn't matter.

3. Rightsizing

Don't use an 8-core CPU if your app only uses 5% of it. Use **Cloud Advisor** tools to find over-provisioned resources and shrink them.

4. Interview Mastery

Q: "What is 'FinOps' and why does it matter?"

Architect Answer: "FinOps is the cultural practice of bringing financial accountability to the variable spend of cloud. It ensures that engineering teams understand the financial impact of their infrastructure choices. By tagging every resource with owner and project names, we can hold teams accountable for their spend and drive a culture of 'Cost as a Feature'."