Refine introduction content for data storage solutions

Removed details about designing data storage solutions for relational data and streamlined the content regarding Azure Cosmos DB.

Author: staleycyn

learn-pr/wwl-azure/design-data-storage-solution-for-relational-data/includes/1-introduction.md

@@ -6,7 +6,7 @@ Many organizations have an aging or under-engineered data platform strategy. The
 
 Tailwind Traders is a fictitious home improvement retailer. The company operates retail hardware stores across the globe and online. It currently manages an on-premises datacenter that hosts the company's retail website. The datacenter also stores all of the data and streaming video for its applications. The on-premises SQL Server provides storage for customer data, order history, and product catalogs. SQL Server also serves as data storage for the internal-only training portal website. The company wants to effectively manage their database needs by migrating their infrastructure to the cloud. 
 
-As you work through this lesson, suppose you're the CTO for Tailwind Traders. You're tasked with finding a cost efficient database solution that provides low latency and high availability. In this module, you explore different storage solutions that solve different types of problems. You review storage options offered by Azure SQL Database, Azure SQL Managed Instance, and SQL Server in an Azure virtual machine. You discover how to work with data in Azure SQL Edge and Azure Cosmos DB. You also learn how to design your solution with data protection. 
+As you work through this lesson, suppose you're the CTO for Tailwind Traders. You're tasked with finding a cost efficient database solution that provides low latency and high availability. In this module, you explore different storage solutions that solve different types of problems. You review storage options offered by Azure SQL Database, Azure SQL Managed Instance, and SQL Server in an Azure virtual machine. You discover how to work with data in Azure Cosmos DB. You also learn how to design your solution with data protection. 
 
 ### Learning objectives
 
@@ -28,19 +28,7 @@ In this module, you learn how to:
 
 ### Skills measured
 
-The content in this module helps you prepare for [Exam AZ-305: Designing Microsoft Azure Infrastructure Solutions](/credentials/certifications/exams/az-305/). The module concepts are covered in:
-
-Design data storage solutions
-
-- Design a data storage solution for relational data
-
-   - Recommend a solution for storing relational data.
-
-   - Recommend a database service tier and compute tier.
-
-   - Recommend a solution for database scalability.
-
-   - Recommend a solution for data protection.
+The content in this module helps you prepare for [Exam AZ-305: Designing Microsoft Azure Infrastructure Solutions](/credentials/certifications/exams/az-305/). 
 
 ### Prerequisites