Preview: Azure SQL Database Index Advisor
Available in preview today, you can receive index tuning recommendations to help improve the performance of your databases. Index Advisor analyzes the query workload and data access patterns for your databases. It recommends the most impactful indexes to help optimize your database performance, and presents users with a report that details the performance impact for the newly created index. For more information, visit the Index Advisor page on MSDN. There is no additional charge for this feature.