![]() ![]() So, you can setup it higher to make sure you will get discounted resources, but the trick is that it might drive the final Spot price higher, so the whole market might be affected if you are trying to buy enough resources to drive the price up. Interesting thing here is that you don’t pay your “bid” price if it is higher then Spot price, but you are actually paying only Spot price, so your “bid” price is more like your maximum what you are willing to pay. This is definitely my first recommendation when anyone is asking about how to use Spot Instances. Great thing is that in 1 request you can define more then 1 EC2 Instance Family and size, which increases your chances to get your discounted EC2s at any given time. Mostly 90% is for some older EC2 Instances, but in general what I see it is still comparable or event bigger discount compare to Reserved Instances with 3 year commitment and All Upfront. From these “bid” prices AWS calculates so called “Spot price” for the resource, and then all the bids which are equal or greater then Spot price are getting fulfilled and receive their Spot EC2s.Īll of it allows you to get up to 90% of discount compare to On-Demand pricing. So, it happens that AWS has some idle infrastructure which, so instead of it just doing nothing, AWS invented the Spot market for unused EC2s, so people can provide their “bid” prices for these EC2s. At the same time, AWS has such a big scale that it allows AWS to reduce its cost due to large economy of scale, which leads to lower prices for buying new HW, electricity and all the other staff for AWS Regions. How Spot EC2 Instances worksīasically, as any other large scale provider, AWS has to maintain some additional capacity at any moment of time for a growth and unexpected spikes. The feature comes with a drawbacks though - in exchange of highly discounted pricing and no commitments you should be aware that AWS can get EC2 Instance back with 2 minute notice period, and there is no guarantee you will get any new instance for the bid you placed.īut how it works in reality and what are the use-cases where you should use it? Let’s find out in the next chapters. Intro into Spot EC2 InstancesĬreated long back in 2009 (here is original blog post from Jeff Barr), Spot instances were launched to ensure win-win deal between AWS and customer, where AWS has higher utilization of its unused infrastructure, and customer gets discounted pricing without any commitment as it was for Reserved Instances I was talking in my previous post. Today, I’m going to cover the second topic on how to use Spot instances or spare capacity in AWS Regions for reducing your costs. Re-factoring for cost reduction - probably the most complex way, but also the one provides the biggest cost savings in a long-term. Re-platforming for cost reduction - how to use modern cloud native technologies for overall IT cost reduction. Managing capacity and right-sizing - also quite easy to implement change which can result in significant cost savings. Spot instances dive deep - how to use spare capacity in AWS regions for your own benefit. Reserved instances and Savings plan - the easiest way to save costs with long-term use of AWS. My plan is to touch these topics, as they will be published I will updated links to each of them: I decided to take all my expertise and experience around this topic and put it into a series or reusable content on Cost Optimization, so more organizations can benefit from it and implement it by them-selfs in their organization. It is all related to the overall economic conditions and uncertainty, so it is clear that the same topic is crucial for many organizations. ![]() As a Solutions Architect at AWS I see more and more requests from customers on cost optimization topic around AWS infrastructure.
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