Getting started with AVR and Atmel Studio 7 

not when I recorded these videos. Atmel Studio - as the name suggests - was made by Atmel supporting their microcontrollers ATmega, ATtiny and ATSAM, the recent version is called Microchip Studio. MPLab is the traditional platform from Microchip for their PIC-microcontrollers. Then Atmel was bought Microchip and some time later they integrated the support for the previously-Atmel-chips in their MPLab. Both platforms use free GCC for the Atmel-chips, however, while Atmel Studio always has been completely free of charge, some features in MPLab are locked in the free version.

Which is better for atmega328p microcontroller* (not PIC)

@@nashithilmi4378 avrdude is only the upload utility to transfer the final code to the chip. As compared to microchip studio avrdude as the uploader supports more different hardware interfaces than microchip's built-in choices.

@@nashithilmi4378 When it comes to the compilation of the source code files by default both microchip studio and platformio use the free avr-gcc-compiler.

I have no experience with the ATSAM family nor with ARM processors in general in Microchip Studio.

have a look at my newer videos - I have abandoned Microchip Studio and converted to PlatformIO under VSCode