This strategy is more nuanced and sophisticated, allowing the user to specify the exact instances that they need. The main categories are type and scope, and the payment options split into All Upfront, No Upfront, and Partial Upfront, depending on how much you are willing to pay right away. While the All Upfront option will amass the best discount, even the No Upfront option will be cheaper than paying on-demand.
There are three types of Reserved Instances.
- Standard RIs offer the highest savings and are ideal for steady-state workloads. While they are less flexible, you can modify attributes such as instance size within the same instance family.
- Convertible RIs provide slightly lower savings than Standard RIs but offer the flexibility to change instance families, operating systems, and tenancies over the term, accommodating evolving application needs.
- Scheduled RIs allow you to reserve instances for specific time periods on a recurring schedule. They are ideal for predictable workloads that need to run at regular intervals.
While convertible RIs with their flexibility seem to better fit the tumultuous nature of iGaming, there are ways to creatively combine several strategies to get what you want. For example, Wildlife Studios had great results from combining Reserved Instances with Spot Instances, assessing when to choose what via Cloud Analyzer.
Reserved instances are also divided by scope into regional and zonal. Every AWS region is a physical piece of land where Amazon has their servers. Each region has several Availability Zones, and, depending on your preferences, you can either commit to a specific zone or to the region as a whole.

- Regional RIs apply to any matching instance in the specified region. This means that they can be used across different Availability Zones within the same region, allowing for more flexible deployment and easier instance balancing. That being said, quite like Spot Instances, Regional RIs do not reserve capacity and availability.
- Zonal RIs do reserve capacity in a specific availability zone, operating in a smaller area, but providing reliable deployment. If your iGaming app requires high availability and guaranteed capacity in a specific zone, but does not necessarily need regional flexibility and resilience, this would be a more confident choice.
When you purchase an RI, AWS applies the discount to any matching instance usage within your account. If you have a Regional RI, it will automatically apply to any instance that matches the criteria (instance type, region, etc.), helping maximize the discount usage. For Zonal RIs, AWS reserves capacity in the specified availability zone and applies the discount to instances launched in that zone.
While most AWS customers choose their region based on proximity to themselves or to their end users, it would be wise to remember that regions are all differently priced and have different latencies. A data-driven iGaming studio will clearly define their priorities (data transfer, latency, storage, or others) when making their choice.
Bottom line:
- Pricing. Reserved Instances offer significant discounts (up to 75%) compared to On-Demand pricing when you commit to using AWS resources for a one-year or three-year term.
- Use. Ideal for predictable workloads with steady-state usage, such as web applications and databases that require consistent and reliable performance.
- Availability. RIs are always available and are not subject to interruption.