Campaign Manager is a web-based ad management system for advertisers and agencies. It can help you traffic, manage, and report on campaigns that they run digitally.
In the case of Campaign Manager, this means that in addition to display/video campaigns and creatives that can be hosted natively within Campaign Manager, other channels such as social, email and third party direct buys can all be traffiked and tracked.
Within the Google stack, Campaign Manager has seamless integration capabilities with Studio, Analytics, Google Ads, and more. Additionally, Campaign Manager is a largely open platform, meaning lots of third-party integrations are available.