For campaign visuals, use only the logo variant featuring the claim. Whenever the claim is not wanted, use the logo variant featuring only “Austria”.
The single-flag logo is used only when optimum readability is not ensured, due to smallness in size or large distance from the onlooker, e.g. with pins or special outdoor advertising materials.
If there is not sufficient space for the B2C logo with the claim, you may also use the logo featuring the word “Austria” plus the flag. Ideally, you would always use the complete logo!