Developers today have the tall task of writing code for the entire software stack which includes front-end, back-end, and data layer (SQL) code. While most seasoned developers have a certain comfort level in writing efficient code for both front-end and back-end layers of an application, the data layer (SQL) code tends to fall short. If Microsoft SQL Server is your database platform and you are not an expert at SQL, this session is for you. We will explore Plan Explorer, a free tool from SentryOne, and use it to improve the performance of slow executing queries on Microsoft SQL Server.