Which B to B Company Sites do the Best Job Communicating High-Tech Concepts to High and Lo-Tech Users?

A good answer would showcase the website of a company that specializes in technologically sophisticated B to B solutions but communicates

• What its product does
• The core value proposition that makes it more desirable than the competitors
• A concise explanation of the tech stack that makes it possible

...so that stakeholders in technical, administrative and business divisions of a company can get the right amount of information to enable them to make the right decisions around this product.