5 Hidden Costs of AWS Migration and How to Avoid Them

| Updated on February 3, 2026

Amazon Web Services (AWS) dominates the cloud infrastructure market. Its operations are 5 times bigger than the combined operations of its next 14 competitors (Source).

It is a solution that can help your business with efficient use of capital and resources while scaling it to its potential. 

However, that’s just the initial rosy picture. As you go deeper into the AWS migration, you will get hit with many unexpected expenses.

Till you embrace the impact, it’s too late. So where do these costs even come from?

In this article, I’ll tell you exactly that, alongwith how you can avoid them. Reading this article will ensure that you complete your AWS migration without any hiccups.

Key Takeaways

  • AWS helps with efficient capital and resource use, and also scaling.
  • Though there are also many hidden costs associated with it.
  • One of the major hidden costs is due to storage and data transfer.
  • To avoid these costs, hire experts, plan early in gradual stages, and invest in training.

Hidden Cost #1: Data Transfer and Storage Costs

If you know anything about cloud, you do expect to pay for storage and transferring data. In fact, most businesses plan for it in advance. And then they get the surprise: there is a shocking difference between the sum they thought they’d pay and what they actually end up paying. 

Why does it happen? AWS data transfer has many small charges that keep piling up as you transfer more data. Specifically: 

  • Data transfer among different AWS regions adds to costs.
  • Backups and old logs get bigger and more numerous over time.
  • Snapshots take place automatically, and their storage also costs money.
  • Your old app communicating with AWS during transfer might cost you a fortune.

How to avoid these issues? Just partner up with experts for your AWS cloud migration for responsible optimization and management of your infrastructure. Even getting a simple consultation can help a lot. Experts will explain how to keep all your data in one AWS region, what devices to use, and how to prevent unnecessary costs. 

FUN FACT
More than one-third of internet users visit AWS-powered sites or applications (Source).

Hidden Cost #2: Downtime and Productivity Loss

Many businesses completely forget about downtime and productivity loss during AWS migration. Data transfer leads to performance lag, especially if the volume is huge, as everything moves slowly. 

You will also experience a shutdown during the switch to AWS. It might not last for long, but it still can lead to significant unexpected losses. Testing can also lead to unforeseen delays if some issues are identified. 

Doing phased migration is the most optimal solution. Move in small stages and schedule each one to take place during low-traffic hours. 

Hidden Cost #3: Post-Migration Infrastructure Costs

Another hidden cost might pop up immediately after your cloud transfer. During the first couple of months, your employees will still be getting used to AWS, and making mistakes is inevitable. This is what businesses encounter most often:

  • Someone might create a server and then forget to turn it off.
  • Databases might be created with many settings activated.
  • If no one pays attention, NAT Gateways, a cloud network tool, might run all day.
  • Without clearly set clean-up standards, your storage will keep growing and growing.

Using AWS Budgets for useful alerts, Compute Optimizer for recommendations of cheaper options, and auto-scaling might help you reduce these costs considerably. However, the issue itself leads us to the third common hidden cost of AWS migration: skill gap and training costs.

Hidden Cost #4: Skills Gap and Training Costs

Businesses, being businesses, expect their employees to quickly grasp how to use AWS. Of course, they don’t foresee any complications. That’s a mistake, and a pretty costly one at that. 

Even experienced employees will struggle to perform their work in a new environment without making a single mistake. Your developers might also need to learn new tools if they want to work efficiently.

Solve this problem by investing in early training. Once again, hire AWS cloud experts — they will manage everything, and they’ll explain what your employees need to know. In addition, consider using Infrastructure as Code tools, as they can reduce the number of manual mistakes. 

Hidden Cost #5: Security and Compliance Costs

This is another hidden cost that many people undergoing AWS migration face. Your cloud environment has to be secure — otherwise, you risk compromising your data. Before migrating, you’ll have to:

  • Set up all the access permissions through Identity and Access Management, which takes time and effort.
  • Invest in cloud monitoring to detect suspicious incidents or patterns to prevent hacking attempts.
  • Use AWS Key Management Service to encrypt all the sensitive data; it is pretty cheap, but if you have large volumes of info, it might get costly anyway.
  • Pay for external audits if you want to comply with GDPR, PCI DSS, ISO 27001, and other standards. 
  • Consider buying third-party security tools to protect your entire cloud more efficiently. 

Sure, you might decide to skip some of these steps, but it might come back to bite you later, leading to even higher expenses. Cloud security is essential, even when you’re working with a system as safe as AWS generally is.

Get Long-Term AWS Benefits by Migrating Smartly

Moving to the cloud can help businesses save money; there is no doubt about it. AWS got the revenue of 107 billion dollars in 2024 — this shows just how popular it is. However, before generating long-term profit, you might face short-term financial complications.

Migration-related downtime, your employees’ inexperience with AWS, security, and post-migration issues — all these problems can drain your resources. The important thing is not to panic and to prepare to handle everything well in advance.

Plan your AWS migration to take place in gradual stages. Invest in early training, or even better, hire AWS experts who’ll provide you with all the guidance you need. By taking care of potential problems from the start, you’ll get to save your money by avoiding hidden costs.  

FAQ

What are the benefits of AWS?

AWS allows efficient use of your capital and resources while scaling to your potential.

What are the hidden costs of AWS?

The major hidden costs associated with AWS migration occur while transferring data and storage requirements.

How to reduce AWS data transfer cost?

Try to keep data within a single region and minimize cross-transfer. Also, use CloudFront and private IPs.





Sudhanyo Chatterjee

Contributor Game-Tech and Internet Writer


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