EiffelStudio is a cross-platform Integrated Development Environment that seamlessly covers the entire lifecycle from analysis and design through implementation, documentation generation, testing, maintenance and update. EiffelStudio is more than a tool and it pays dividends beyond the initial phases of product development. With the EiffelStudio approach the real-world model programmers develop (the one in their head and on the white board) translates into EiffelStudio implementation without the semantic chasm that is inherent in other approaches. EiffelStudio enables the production of quality products that are easy to maintain, update and reuse but in addition the products built with EiffelStudio, all the way down to the feature signatures, reflect faithfully the problem to solve in the first place. This translates into real life benefits for the users' organization as it means that when the requirements or the problem change, the programmer knows where to go to make the changes in the design and code. And, when there is an error in the code (a semantic error), the programmer will know where and why because the product as implemented doesn't accurately reflect the solution that was modeled, and the programmer will know what to do.