You own a small business that sells shoes. You're ready to run your first Smart Shopping campaign that uses a set budget.   

How does the system allocate budget on a Smart Shopping campaign? 

• Budget is automatically allocated across channels, based on performance. You don't need to create a separate campaign for each channel. 
• Budget is automatically allocated by campaign, so you'll need to create a separate campaign by channel, and Smart Shopping will optimise budget. 
• Budget is manually allocated across channels, based on your channel preference. You have control over the campaign setup while manually optimising by channel. 
• Budget is manually allocated by campaign, so you'll need to create a separate campaign by channel and budget. 

Answer: Budget is automatically allocated across channels, based on performance. You don't need to create a separate campaign for each channel.