The Meta Business portfolio is the legal container for every Page, ad account, and WABA.
A Meta Business Account (sometimes called a "portfolio") is the legal container that owns your Facebook Pages, Instagram accounts, WhatsApp Business Accounts, and ad accounts. Every other Meta asset attaches to it.
If you already have one — skip to Creating a Facebook Page. Most teams who've ever run a Facebook ad already have one without realising.
With the Business Account in place, you can: