Update README.md (#10825)

 - Renewed the description of What is Medusa
 - Removed Roadmap link as this seem out-of-date

Author: MedusaNick

README.md

@@ -40,13 +40,11 @@ Visit the [Documentation](https://docs.medusajs.com/learn) to set up a Medusa ap
 
 ## What is Medusa
 
-Medusa is a set of commerce modules and tools that allow you to build rich, reliable, and performant commerce applications without reinventing core commerce logic. The modules can be customized and used to build advanced ecommerce stores, marketplaces, or any product that needs foundational commerce primitives. All modules are open-source and freely available on npm.
+Medusa is an ecommerce platform with a built-in framework for customization that allows you to build custom commerce applications without reinventing core commerce logic. The framework and modules can be used to build advanced B2B or DTC ecommerce stores, marketplaces, PoS systems, service businesses, or any product that needs foundational commerce primitives. All commerce modules are open-source and freely available on npm.
 
 Learn more about [Medusa’s architecture](https://docs.medusajs.com/learn/advanced-development/architecture/overview) and [commerce modules](https://docs.medusajs.com/resources/commerce-modules) in the Docs.
 
-## Roadmap, Upgrades & Integrations
-
-You can view the planned, started and completed features in the [Roadmap discussion](https://github.com/medusajs/medusa/discussions/categories/roadmap).
+## Upgrades & Integrations
 
 Follow the [Release Notes](https://github.com/medusajs/medusa/releases) to keep your Medusa project up-to-date.