The corporate strategy has changed to be more focused on the customer. This suggests that the notion that the consumer is king is given top priority. Customer happiness is a factor that businesses cannot disregard as a result. Software Testing Course is now essential to ensure this satisfaction, as it should be. Additionally, the adoption of the Agile methodology and the requirement to increase market responsiveness have only accelerated the development of new professional roles in the testing industry. Additionally, this has led to uncertainty and the replacement of certain professionals. But the debate between SDET and QA, or an SDET and QA Engineer (QE), is a very real one. This suggests that the distinction between SDET and QA should be taken into consideration.