Selecting an AWS region is one of the most crucial decisions which has to be taken before setting up the AWS component. The Amazon AWS cloud infrastructures are built in numerous geographical locations around the world where Amazon Web Services have data centers. The locations worldwide are composed of Availability Zones and regions. Choosing Amazon Web Services region wisely can save customers the pain of overspending millions of dollars and potentially jeopardizing the growth of their applications too.
However, most of the customers choose the regions based on the proximity to their end users or themselves which sounds quite reasonable but there are other factors which too could make a huge difference.
The key parameters to consider before choosing the appropriate AWS Region for the workloads are:
Customer Proximity and Latency
Slow connection can reduce your customer base
The basic norm is to choose a region close to the customers. The idea behind, is the shortest piece of string between public cloud and client application. For instance, most of the users access the application from within North America, hence, it typically makes sense to deploy the software in an AWS region located in the US or Canada, which further results in lowest network latency and the quickest response. Going forward, the latency monitoring through a dashboard can reflect a vivid image of the difference among the various AWS regions worldwide and at the same time can be optimized using a unique solution for Network Performance Optimization.
Cost varies by Amazon Web Services regions
Picking up a wrong region could increase the chances of paying a lot more
Costs of the AWS Services would be different for almost every geographical region, as the medley of the cost, taxes and manpower for the physical infrastructures and data centers are different from Region to Region. Amazon also has a Cost Calculator which gives a glance of the monthly costs based on the inputs. The AWS Simple Monthly Calculator helps customers and other prospects to estimate their monthly AWS bill more efficiently. Using this tool, they can add, modify and remove services from their ‘bill’ and it will recalculate their estimated monthly charges automatically. The calculator also shows common customer samples and their usage, such as Disaster Recovery and Backup or Web Application. For example, an m3. large EC2 instance cost in Europe Frankfurt is $119.52, whereas the same instance in US North Virginia will cost you $100.8, more than 10% less.
The above image from Concurrency Labs shows the monthly cost of data transfer region wise
Hence, a cost comparison of the AWS Regions where we choose to deploy our workloads can be provident and a wise take altogether.
Security and Compliance
Reduces the risk of data damage
Every Country has its own Security and Compliance norms, once the customer data is moving from one region to the other region. Recently, the European Court of Justice proposed that the 15-year-old US-EU Safe Harbor framework is no longer valid for the transfer of personal data from the European Economic Area (EEA) to the US. Hence, the customer must review the compliance certifications for the Amazon Web Services they require, and based on that customers can ensure to be able to run their workloads using that service.
Service Level Agreement
Provides better service
AWS Services don’t affirm same SLAs, but abide by its own parameters about availability. The SLAs shall only be met by AWS once you only deploy the application as per AWS Design and the best practices recommended.
The above listed parameters will assist you to review your requirements and further select the best suitable Region for your application hosting and deployment.