AWS Cost Optimisation: Achieve Optimal Return on your Investment

While the cloud offers excellent opportunities for scalability, flexibility and cost reduction due to the lack of physical infrastructure and maintenance, without a robust cost optimisation strategy, AWS costs can creep up over time. In this blog, we look at some ways in which you can improve performance and optimise the value of your investment.

AWS operates mostly as a pay-as-you-go model – great for agility – but it can mean that some resources go underutilised. However, there are other pricing components you can use to manage your costs more effectively. Ultimately, AWS cost optimisation isn’t simply about lowering your bill but about getting the most value from your investment.

The first step in developing a AWS cost optimisation strategy is to understand the charges and how your operations impact your bill. That means gaining an in-depth knowledge of on-demand instances, spot pricing, savings plans and hidden fees:

On-demand pricing – Pay-as-you-go pricing with no long-term commitments. Offers flexibility but costs can add up if not properly monitored and controlled.

Reserved instances (RIs) – A commitment to a specific instance type over a fixed term for a discount. Ideal for long-term usage, but matching resource needs with the term of the agreement can require advance planning.

Savings plans – Flexible plans that allow you to commit to a level of usage for a number of different services. Ideal for securing the cost benefits of RIs with flexibility over services.

Spot pricing – Purchase spare AWS availability at discounted rates by bidding on instances. Suitable for flexible workloads, such as batch processing or data analysis, but runs the risk of interruptions.

Other costs – Computing, storage and data transfer charges can vary, depending on instance type, storage type and whether data transfer is inbound or outbound, but they all add up.

Once you understand the pricing components, you are better placed to make an informed decision on which best suit your needs at any particular time. The AWS pricing calculator can also help you assess the impact of changes you make to your AWS cost optimisation strategy.

As with any business operation, demand can rise and fall, which can result in unpredictable resource usage when it comes to your AWS services, leading to bills that are larger than anticipated. The key here is to put a strategy in place that gives you greater control over your resources and helps you manage your budget better.

• Monitor resources to identify overprovisioned or underutilised resources, right-sizing deployments to match your workload.
• Not all storage options are the same. Evaluate your storage needs and utilise cost-effective storage classes.
• Optimise network architecture by minimising cross-region transfers and adjusting VPC settings to avoid unnecessary excessive data movement.
• Leverage AWS automation tools to shutdown unused resources.

Getting the best value from AWS services means continually reviewing your usage. Analyse your spend, right-size resources and actively seek out money-saving opportunities. You can do this by logging into the AWS management console and selecting ‘Cost Explorer’. Here, you can create reports over a time period with billing data to better understand your spending habits. Look for spikes or anomalies that could indicate inefficiencies. You can also use filtering options to break down spending by region, service or account. This can allow you to spot areas of overprovision or underutilisation.

Automate cost monitoring and alerts – By setting up continuous monitoring, you can identify anomalies and prevent cost overruns. Choose metrics that have the greatest impact on your spending and set up CloudWatch alarms. Integrate these into operational tools such as Slack or Microsoft Teams.

Right-size resources – Match instance types and sizes to workload requirements. For example, organisations often under-utilise EC2 instances, leading to unnecessary costs. AWS tools such as Compute Optimizer and Trusted Advisor can help.

Optimise storage – Manage your storage costs more effectively by migrating unused volumes and old snapshots, delete unattached EBS volumes and make sure you use the right S3 tier.

Leverage Auto Scaling – Turn off idle resources when they’re not required. Use AWS Auto Scaling, as it ensures that you only use resources when you need to.

Make the most of AWS tools – AWS native tools such as Cost Explorer, Budgets, Cost Anomaly Detection and Trusted Advisor are all there to help you get more value. Learn how to use them and put them to work aligned with business needs.

Implement cost governance – Put in place policies to maintain discipline in cloud spend. Identify stakeholders, establish roles and document policies. Use automation to enforce cost controls.

AWS cost optimisation is an ongoing process of monitoring, refining and aligning cloud usage with business needs. And not every business has the time or resources to do that effectively. However, there is help out there. Outsourcing AWS cost optimisation as part of a CX transformation or upgrade is possible for those organisation that lack in-house expertise or require support with cloud spending. Engaging a partner can allow businesses to focus on their core operations while benefiting from expert-driven cost-reduction and maximised cloud value.

For more information on Amazon Connect, CX transformation or AWS cost optimisation, talk to an expert at DigitalWell.