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 delivers a secure, stable, and high-performance environment for developing and running cloud and enterprise applications. Regularly updated and maintained, this Citadel VM embodies the pinnacle of reliability for your operations.
By deploying an image hardened with the Citadel Audit, organizations can significantly enhance efficiency while reducing costs, time, and associated risks. This Citadel VM integrates a comprehensive set of security recommendations leading open-source industry standards, ensuring a robust defense layer without compromising the technology's functionality or utility.
Each VM includes comprehensive documentation and a detailed security report from Citadel Audit, offering insights into the security enhancements and best practices implemented.
This is the recommended default AMI by our security experts at Citadel. We are committed to providing continuous security and maintenance updates for all instances running, ensuring your operations are safeguarded with the latest security standards.
Highlights
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.
Secure Configuration - The configuration of the AMI enhances security by focusing on two main security goals: limiting access and reducing software vulnerabilities.
Premium support included. This AMI is updated and maintained quarterly by Citadel.
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 based on the AWS EC2 instance type you launch. Each dimension maps to a specific instance size, so pricing scales with the compute, memory, and specialized hardware you select. Smaller instances like t2.nano bill at a lower hourly rate, while large or metal instances like x1e.32xlarge and u-24tb1.metal cost more per hour. You choose the size that fits your workload. Charges apply for each hour the software runs, on top of standard AWS infrastructure fees. No upfront commitment or fixed term applies to this usage-based model.
Top-of-mind questions for buyers
Am I charged for instances that are stopped or powered off, such as a standby server?
Charges apply for each hour the software runs on an active instance. Fully stopped or powered-off instances do not accrue software charges. Underlying AWS storage fees may still apply while an instance is stopped, but the software license meters only running hours.
What does the hourly rate cover, and what does my team still own?
The rate covers a maintained, PCI-focused hardened operating-system image, patched monthly with published evidence artifacts. Your team still owns application security, cloud architecture, identity, networking, logging, evidence retention, and assessor validation. The image addresses the OS layer only, not the broader workload.
Which factor drives my total cost across these instance-type dimensions?
The instance type you launch drives cost. Each dimension maps to one EC2 size, so compute, memory, and specialized hardware set the hourly rate. Running more instances or larger sizes raises the bill. The software charge applies per instance-hour, separate from AWS infrastructure fees.
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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.
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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