CornerStone Strategy LLC
Cornerstone Strategy works with AWS Partners to transform their AWS partnership into a growth engine.
Cornerstone Strategy specializes in transforming AWS partnerships into growth engines by developing a customized partnership plan for your business that achieves tangible business outcomes — including increased pipeline, more customers, and accelerated revenue growth.
Areas of focus include:
- Defining your unique, differentiated Value Proposition
- Evolving your Go-To-Market Strategy to better align with AWS
- Developing Sales Plays and Co-Sell Motions that will resonate with AWS Sellers and Leadership
- Identifying strategic, complementary partnerships with other AWS partners that drive additional pipeline
- Recommending and helping prioritize the Amazon Partner Network programs that will provide the most impact for your business
Our Vision
At Cornerstone Strategy, I believe that partnering is both an Art and a Science — and I excel in the Art: the intuition, creativity, and human connections that transform strategic partnerships into revenue-generating, market-moving relationships.
Cornerstone Strategy's art is reflected in four partnership pillars that guide everything I do for my clients:
1. Stand Out and Win Customer Mindshare
2. Lead with Business Outcomes, Not Features
3. Execute Go-To-Market Motions that Build Pipeline and Accelerate Revenue
4. Choose Partners that Accelerate Your Impact
Request your copy of my Partnership Success Playbook below to see exactly how these four pillars work in action.
Cornerstone Strategy is Eric Rosenstein
For 25 years, Eric has operated at the forefront of Partnerships, Alliances, and GTM Strategy — building relationships and revenue with some of the most influential names in technology, including AWS, Microsoft, Google, and Salesforce. His edge isn't just experience — it's an instinctive understanding of what it takes to make partnerships work.
That instinct was on full display during his time at AWS where he helped architect a Public Sector partner community so strategically aligned that it scaled revenue from $15M to $350M over five years. The formula? Identifying and developing Partners with the capacity, capability, and commitment to deliver — and working with them to create winning GTM strategies.
Eric now channels that expertise into Cornerstone Strategy, helping AWS partners stand out, lead with business outcomes, and build partnerships to accelerate growth.
A lifelong learner and dedicated mentor, Eric gives back through the Penn State Smeal School of Business, Georgetown's MBA program, and the Leadership Institute's summer high school internship program — because great partnerships, like great leaders, don't happen by accident.
Eric holds a Bachelor's Degree in Business from Penn State and an MBA in Global Business Strategy, with honors, from Georgetown University.