Thank you for downloading Debian!
This is Debian 11, codenamed bullseye, netinst, for 64-bit PC (amd64) debian-11.3.0-amd64-netinst.iso.
Important: Make sure to verify your download with the checksum.
Debian installer ISOs are hybrid images, which means they can be written directly to CD/DVD/BD media OR to USB sticks.
Other installers and images, such as live systems, offline installers for systems without a network connection, installers for other CPU architectures, or cloud instances, can be found at Getting Debian.
Unofficial installers with non-free firmware, helpful for some network and video adapters, can be downloaded from Unofficial non-free images including firmware packages.