Hi @Lenin.Mariappan,
Unfortunately, we don’t have the ability to extend the 15-day free trial period. The product is still available to use in “lite” mode. Here are further details on the “Lite” edition (https://docs.appdynamics.com/display/PRO43/Lite+and+Pro+Editions). If you have further questions regarding purchasing, fill out the information on this Contact us page (https://www.appdynamics.com/company/contact-us/). Within your AppD Profile page, there is also a button to contact sales.
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