Differences between Smoke Testing and Sanity Testing are as follows: Topic Smoke Testing Sanity Testing Purpose To verify the BASIC or CRITICAL existing functionality of an Application- before starting rigorous testing. To verify NEWLY ADDED/UPDATED functionality or BUG FIXES. Who does these testing? Performed by both TESTERS and DEVELOPERS Performed only by TESTERS Can these tests be automated? Can be automated Can’t be automated In technical terms Exercises the ENTIRE system from END-TO-END Exercises only a particular COMPONENT of the entire system In general terms SHALLOW and WIDE range of testing. More like a GENERAL HEALTH CHECKUP Narrow and DEEP approach of testing. More like a SPECIALIZED HEALTH CHECKUP