This product has charges associated with it for hardening and maintenance. This Citadel VM is secured using 300+ open source security controls and validated using Citadel Audit.
This product has charges associated with it for hardening and maintenance. This Citadel Hardened VM is secured using 300+ security controls and validated using Citadel Audit. This AMI has been hardened by security professionals to meet the rigorous standards of the PCI DSS.
This AMI delivers a secure, stable, and high-performance environment, ideal for developing and running cloud and enterprise applications. Regularly updated and maintained, this Citadel VM stands at the forefront of reliability and efficiency.
Deploying this image, hardened with the latest open source security frameworks and verified by Citadel Audit, significantly enhances your operational security while reducing costs, time, and associated risks. Tailored to meet PCI compliance standards, it offers a robust foundation for securing sensitive data. However, we recommend customers conduct their own verification using their preferred tools to ensure full compliance.
We've meticulously configured our Citadel VM to incorporate the most effective security recommendations, ensuring maximum protection without compromising the technology's functionality or performance.
This is our recommended default Hardened AMI, backed by our commitment to providing continuous security and maintenance updates, ensuring your infrastructure remains secure and up-to-date with the latest standards.
Highlights
Current and Consistent: Citadel's hardened images are kept up-to-date with the latest security patches and updates, ensuring you always have the most recent advancements in security and technology at your fingertips.
Built on open source secure frameworks and validated by Citadel Audit, our solutions offer unparalleled security and reliability, widely accepted by governments and industries. Our community-driven approach safeguards critical infrastructure and sensitive data, proving our commitment to the highest cybersecurity standards. Essential for top-tier security defense.
AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time. Alternatively, you can pay upfront for a contract, which typically covers your anticipated usage for the contract duration. Any usage beyond contract will incur additional usage-based costs.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
If you are an AWS Free Tier customer with a free plan, you are eligible to subscribe to this offer. You can use free credits to cover the cost of eligible AWS infrastructure. See AWS Free Tier for more details. If you created an AWS account before July 15th, 2025, and qualify for the Legacy AWS Free Tier, Amazon EC2 charges for Micro instances are free for up to 750 hours per month. See Legacy AWS Free Tier for more details.
You pay by the hour for this hardened, PCI-focused Red Hat Enterprise Linux 9 image. Pricing is usage-based, with no upfront commitment. The many dimensions each map to a specific EC2 instance type, from small shared instances to large memory-, compute-, storage-, and GPU-focused sizes, plus bare-metal options. Your hourly software rate is set by the instance type you launch, so larger instances carry higher rates. Pick the instance that matches your workload's compute, memory, or storage needs. AWS infrastructure charges apply separately and are billed alongside the software fee.
Top-of-mind questions for buyers
Am I charged the hourly software fee when my instance is stopped or powered off?
The software rate meters running instance-hours only. A fully stopped or powered-off instance does not accrue the hourly software fee. Separate AWS charges, such as storage for the stopped instance, may still apply and are billed by AWS, not as part of this software rate.
Does the hourly rate include the underlying AWS compute, or is that billed separately?
The hourly rate covers only the hardened, PCI-focused software layer. AWS charges for the EC2 instance and related infrastructure are billed separately by AWS on the same invoice. Product fees and AWS infrastructure charges are shown on the listing.
What determines which hourly rate I pay across the many instance-type dimensions?
Each dimension maps to one EC2 instance type. The rate you pay is set by the instance type you launch. There is no separate metering for users or data. Only the running instance's type and hours drive the software charge, so you pick the size matching your workload.
citadelpci.com
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Vendor refund policy
At present, Citadel does not provide refunds. Billing will be only for the actual duration of instance use. Just like other Citadel offerings, our primary objective is to ensure complete satisfaction for all our customers. Should you need further assistance, please reach out to our team directly at support@citadelelement.com.
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Legal
Vendor terms and conditions
Upon subscribing to this product, you must acknowledge and agree to the terms and conditions outlined in the vendor's End User License Agreement (EULA).
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Vendors are responsible for their product descriptions and other product content. AWS does not warrant that vendors' product descriptions or other product content are accurate, complete, reliable, current, or error-free.
An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.
Version release notes
Security patches and package updates (August 2026)
Additional details
Usage instructions
Connect over SSH using the key pair selected at launch. The default user is shown above. See the listing's usage instructions for full details.
Support is part of what you get with a Citadel image, and it comes from a US-based team that works on these builds every day. Email support@citadelpci.com with anything - choosing the right image, how the hardening behaves, patching and releases, evidence for a PCI DSS review, or a question you are not sure who else to ask. We read every message, and we would much rather you ask than guess. More about how we work with customers:
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
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