Which factors are important before selecting region in AWS? An AWS Region is a physical cluster of data centers located in a specific geographic location. So, the Sydney Region data centers are all located in Sydney and the Oregon Region has data centers all located in Oregon.
A region consists of multiple Availability Zones. An Availability Zone is one or more data centers that contain the physical infrastructure that provides AWS services eg data, storage, networking. There are very high-speed connections between Availability Zones within a Region. So, which Region to choose? It should typically be the one closest to your customers to provide faster response or perhaps closest to your existing data center if you are connecting it to AWS.
You might want to use multiple data centers so that you have services closest to customers spread around the world, rather than having them all connect back to one location.
Or, you might want to use multiple Regions for redundancy in case of failure. There might also be legal requirements of which Region to use based on data governance, privacy laws, etc. You might even choose a Region based on a lower price USA regions are generally lower cost than others, especially for Internet data transfer costs.
You might also choose a region based upon which services are available : Region Table. The definition and documentation of AWS Region is stated in the above comments. In summary, AWS Region is a separate geographic area. Availability Zones is used for high availability.
There are 2 or more Availability Zones for each region. There are a number of resources that can help you understand AWS regions, availability zones, and how to architect using them, including:. Stack Overflow for Teams — Collaborate and share knowledge with a private group. But the closest current geographic AWS Region to Israel is Bahrain me-south-1 , or Milan eu-south-1 , both regions are similar in cost, but for those willing to tolerate added latency, as a trade-off for cost, Ireland eu-west-1 is a good second choice.
Both Tokyo and Osaka can be more expensive for some AWS services, so for those willing to tolerate added latency, as a trade-off for cost, Oregon us-west-2 is a good second choice. Seoul is one of the most expensive AWS regions, so for those willing to tolerate added latency, as a trade-off for cost, Oregon us-west-2 is a good second choice. London is also one of the cheaper AWS regions, so is also a good monetary choice.
Oregon is one of the cheapest AWS Regions, so is also a good monetary choice. Cape Town is one of the more expensive AWS regions, so for those willing to tolerate added latency, as a trade-off for cost, Ireland eu-west-1 is a good second choice.
Ohio is one of the cheapest AWS Regions, so is a good monetary choice. Hopefully, this helped give you a head start when it comes to choosing your AWS Region, but remember to consider all factors when choosing an AWS Region, not just cost and latency.
A Costing Or take a m5. If you thought N. California would be the same price as N. Do you want to create a serverless microservice that integrates with your existing applications in N.
California Nov 21st, from the day it was first announced July 9th, Or more than 2 years for Lambda November 21st, from the day it was first announced in N. Virginia November 13th, I put together the following table, which tracks AWS services that were announced in and the dates in which they were released in different regions:. And this table tells you how many days each region has been without a particular service, as of January 5th, Out of this data sample, N.
Virginia is the only region where all services are available from day 1. California days and Singapore days. While all regions have at least 2 Availability Zones, the number of AZs varies by region. Actually N. Virginia is the only region with 6 AZs. Ten regions have 3 Availability Zones and four regions have only 2 Availability Zones.
Why does this matter? If you are building an application with strict availability requirements, you should probably stay away from those four regions that only have 2 Availability Zones. If one AZ in those regions is temporarily unavailable which can happen - for example June 4th, you would be left with only 1 AZ to process all your transactions.
When there is only 1 AZ left, there will be various failover mechanisms triggered by AWS and by other customers, bringing more load to that one AZ, which will put your application in a potentially risky situation. Basically, if you have high availability requirements then you should stick to those regions with 3 AZs Tokyo, Sao Paulo, N.
Virginia, which has 6 AZs. Your main region is N. Virginia and you want to copy all your data to a different region.
This is makes Ohio the best option for data backups for N. Virginia, together with an expected lower latency. As you can see, there are a lot of factors to consider when choosing the right AWS region.
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