3 days ago - Then this RI’s discounted rate can automatically apply to two m4.xlarge instances in us-east-1a or four m4.large instances in us-east-1b. ... Offering class: There are two classes of RIs: Convertible and Standard. Convertible RIs can be exchanged for different Convertible RIs of equal or greater value. Term: AWS offers Standard RIs for 1-year or 3-year terms. Reserved Instance Marketplace sellers also offer RIs often with shorter terms.

3 days ago - Purchasing Reserved Instances on a recurring schedule lets you pay for compute capacity by the hour and obtain a capacity reservation ahead of time for only the time periods you will need it. ... The following summarizes features of all RIs. Provide a significant discount compared to running instances On-Demand. Can apply to usage across all Availability Zones in an AWS ...

3 days ago - Amazon EC2 usage is billed in one-second increments, with a minimum of 60 seconds. The same is true for provisioned storage for Amazon Elastic Block Store (Amazon EBS) volumes. Per-second billing applies to all purchase options. It's available across all Regions and Availability Zones for these instances:

September 3, 2024 - The new Scheduled Reserved Instance model allows you to reserve instances for predefined blocks of time on a recurring basis for a one-year term, with prices that are generally 5 to 10% lower than the equivalent On-Demand rates.

A Reserved Instance has four instance attributes that determine its price.

4 days ago - You can make rightsizing a smooth ... monitoring and analysis. ... Amazon EC2 Reserved Instances (RI) provide a significant discount (up to 75%) compared to On-Demand pricing and provide a capacity reservation when used in a specific Availability Zone....

April 30, 2025 - However, once you get a Scheduled Reserved Instance, the price you were quoted for is the one you’ll pay. Commitment period (1 year vs. 3 years), Payment option (Full up-front, Partial up-front, No up-front), ... Instance type and family you choose. Reserved Instance Optimization is the process of consistently increasing the value you get from using Reserved Instances. The idea is to maximize your RI consumption and associated charges as your AWS setup and computing demands vary over the course of your subscription.

April 17, 2025 - On-Demand instances let you pay for compute capacity by the hour or second with no long-term commitment, making them ideal for short-term or unpredictable workloads. In contrast, AWS Reserved Instances offer significant cost savings (up to 72%) in exchange for a one- or three-year commitment to specific resource configurations, making them better suited for steady-state usage.

3 days ago - Reserved Instance attributes such as instance family, instance type, platform, scope, or tenancy may be modified, depending on the requested change. Some AWS Reserved Instances may also be merged. You can also buy scheduled Reserved Instances for recurring time periods, effectively time-sharing your instances for cost savings.

How to Use AWS Reserved Instances for Maximum Savings

Amazon Web Services (AWS) Reserved Instances (RIs) are a pricing option that can significantly reduce your cloud computing costs on services like Amazon EC2 and Amazon RDS. In simple terms, a Reserved Instance is not an actual virtual machine, but rather a billing arrangement – a discounted rate that you earn by committing to a usage plan. By agreeing to use a certain instance configuration for a 1-year or 3-year term, you receive a lower price compared to pay-as-you-go On-Demand rates.

Scheduled Reserved Instances are available for one-year terms at 5-10% below On-Demand rates, in the US-East (Virginia), US-West (Oregon), and EU-West (Ireland) regions for C3, C4, M4, and R3 instance types. Support for additional regions and instance types will be added the future.

August 25, 2025 - Since reserved instances are basically discounts applied to on-demand instances, their prices are tied to the base price of the on-demand instance.

AWS Savings Plan vs Reserved Instances: An Overview

May 27, 2025 - Convertible Reserved Instances: These RIs offer more flexibility than standard RIs, allowing you to exchange or modify the reservation for another instance type, family, or operating system. Convertible RIs offer a lower discount than Standard RIs but can be a good option for businesses with rapidly changing workloads or those looking to take advantage of new instance types as they become available. Scheduled Reserved Instances: These RIs allow you to reserve capacity for specific time windows during the week, which can be useful for workloads with predictable usage patterns.

March 18, 2025 - You can purchase capacity reservations in daily, weekly, or monthly increments over a 1-year term, with discounts of 5-10% depending on the total scheduled duration within the term.

November 11, 2024 - The AWS price list API hasn’t been updated yet with SI prices but a quick survey of the AWS EC2 pricing page confirms what AWS promises: cost savings between 5-10% depending on when you run the workload. An important thing to consider is that the times for running instances are normalized to UTC and essentially line up with the weekends.

July 29, 2025 - On the other side, the price can ... of time and in return for a commitment, Amazon will give you a discount that can reach as high as 75%....

June 10, 2025 - Savings Plans and Reserved Instances differ in flexibility, where to buy, the amount of savings for specific AWS services, and where you can apply each model’s discount. To begin with, Reserved Instances are based on the commitment to use an instance at a particular price over a specific period, while Savings Plans are based on the commitment to spend a particular dollar amount per hour over a specific period.

For example, if you create a Capacity Reservation for 20 m4.large Linux instances and run 15 m4.large Linux instances in the same Availability Zone, you will be charged for 15 active instances and for 5 unused instances in the reservation.