Amazon Web Services, Inc.

410 Terry Avenue North

Seattle, WA 98109

aws.amazon.com/enterprise

July 23, 2026

Arthur Vance

Chief Technology Officer

Vanguard Financial Systems

100 Federal Street, 24th Floor

Boston, MA 02110

Dear Mr. Vance,

As financial services architectures scale rapidly to process real-time transaction volumes, deploy predictive

analytics, and maintain zero-trust security standards, enterprise technology leadership faces a paramount

imperative: modernizing core legacy infrastructure without risking operational disruption or inflating cloud

total cost of ownership.

Many CTOs and IT executives we consult with report that maintaining legacy on-premises databases and

rigid data center infrastructure creates severe operational friction. Siloed systems restrict compute elasticity

during demand spikes, slow down product development cycles, and force internal teams to devote valuable

engineering resources to routine maintenance rather than revenue-generating innovation.

AWS Cloud Enterprise Solutions addresses these bottlenecks directly by providing a secure, highly elastic,

and fully managed cloud infrastructure engineered for mission-critical enterprise workloads. By modernizing

Vanguard Financial Systems’ core applications on AWS using Amazon EC2, Amazon Aurora, and AWS

Migration Hub, your engineering teams can achieve scalable performance, seamless high availability, and

automated infrastructure management.

•

Enterprise Elasticity & On-Demand Compute:

Dynamically scale workloads during peak trading and

settlement hours with Amazon EC2 auto-scaling, eliminating over-provisioned hardware capacity and

reducing idle infrastructure overhead.

•

High-Throughput Managed Relational Databases:

Experience unmatched data resilience and

performance with Amazon Aurora, delivering commercial-grade relational database speed and

durability at a fraction of traditional database licensing costs.

•

Financial-Grade Security & Compliance Control:

Safeguard sensitive financial data using AWS Key

Management Service (KMS), hardware-enforced encryption, and automated compliance auditing

designed to satisfy stringent PCI-DSS, SOC, and ISO standards.

•

aws

Streamlined Cloud Migration & Modernization:

Accelerate time-to-value using the AWS Cloud

Adoption Framework (CAF) and dedicated AWS Migration Acceleration Program (MAP) methodologies

to minimize technical risk during enterprise transition.

Backed by unmatched global infrastructure scale, millions of active global customers, and decades of

enterprise cloud leadership, AWS powers leading financial institutions worldwide, delivering 99.99%

availability standards and continuous operational resilience.

I welcome the opportunity to discuss Vanguard Financial Systems’ cloud modernization goals

and evaluate how AWS enterprise solutions can support your technology roadmap this year.

Are you open to a brief 20-minute executive conversation next Tuesday or Wednesday to

explore a tailored infrastructure modernization strategy for your team?

Sincerely,

Elena Rostova

Senior Director, Enterprise Cloud Solutions

Amazon Web Services, Inc. • elena.rostova@aws-enterprise.com • aws.amazon.com/enterprise

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