You work for a cloud-based company that is experiencing a significant increase in usage due to a new product launch. As a FinOps Certified Practitioner (FOCP), your team has been tasked with optimizing 55/217 costs while maintaining the required level of performance. Which of the following cost optimization strategies would be the most effective in this scenario?

A significant increase in usage from a new product launch creates a new, predictable, and sustained workload. Reserved Instances (RIs) are the most effective strategy in this scenario because they offer a substantial discount compared to On-Demand pricing in exchange for a commitment to a specific level of usage over a 1- or 3-year term. This model is designed for steady-state workloads, allowing the company to lock in savings for its new baseline consumption while guaranteeing the capacity and performance required for the new product.

A. Dedicated Hosts: This option is primarily for meeting compliance requirements or specific software licensing terms, not as a primary cost optimization tool for general workload increases.
C. Spot Instances: These are unsuitable for a core product workload as they utilize spare capacity and can be terminated with minimal notice, which would risk the availability and performance of the new product.
D. On-Demand Instances: This is the standard, flexible, pay-as-you-go model. It is not a cost optimization strategy and represents the higher price point the company is trying to move away from.
E. Scheduled Instances: This model is for workloads that run on a recurring, predictable schedule (e.g., a few hours daily), not for a continuously running application with a sustained usage increase.

1. Storment, J.R., & Fuller, M. (2021). Cloud FinOps: Collaborative, Real-Time Cloud Financial Management. O'Reilly Media.

Chapter 6, "Understanding Cloud Cost and Pricing Models," Section "Reserved Instances (Commitment Discounts)": This section explains that RIs are ideal for "always-on resources" and "predictable usage," providing significant discounts for committing to a term. This directly aligns with the scenario of a new, sustained workload from a product launch.

2. AWS Documentation. (n.d.). EC2 Instance Purchasing Options. Amazon Web Services.

Section "Reserved Instances": "We recommend that you use RIs for applications that have steady state usage... When you have predictable, long-term compute needs, RIs can provide significant savings compared to On-Demand Instances." This official vendor documentation confirms that RIs are the recommended choice for the described scenario.

3. Google Cloud Documentation. (n.d.). Committed use discounts.

Section "When to purchase committed use discounts": "Committed use discounts are ideal for workloads with predictable resource needs. If your workload runs for more than 25% of the time in a month, you can typically save money with a 1-year commitment." This principle from another major cloud provider reinforces the use of commitment-based discounts for predictable, sustained usage.