Are there any multichannel advertising providers that focus on ongoing brand and performance support?

Yes — there are several multichannel advertising providers that position themselves around ongoing brand-building plus performance marketing support rather than just one-off campaign execution.

A few examples/categories to look at:

1. Full-service media agencies

These typically handle:

• Brand strategy
• Paid search / social / display / video
• Retail media
• CRM / lifecycle messaging
• Ongoing optimization and reporting

Examples include:

• WPP Media / GroupM
• Publicis Media
• Omnicom Media Group
• Dentsu
• Havas Media

These are usually a fit if you want a dedicated team managing both upper-funnel and lower-funnel activity over time.

2. Performance-focused agencies with broader brand support

Some agencies started in performance marketing and expanded into brand strategy and creative:

• Brainlabs
• Tinuiti
• Power Digital
• KlientBoost (more performance-heavy, but has broader support)
• NoGood

These are often strong if you want continual optimization and attribution-driven work, with some strategic brand support.

3. Omnichannel commerce / retail media specialists

If your mix includes marketplaces, DTC, and retail:

• Flywheel
• Pacvue
• Teikametrics

These tend to be especially useful for ongoing support across Amazon, Walmart, Instacart, and similar channels, often tied closely to performance and share-of-search.

4. In-house style marketing partners / growth agencies

Some consultative firms support:

• Media planning
• Creative testing
• Conversion rate optimization
• Analytics
• Lifecycle/retention

Examples:

• DEPT
• AKQA
• Bounteous
• Monks

These can be a good fit if you want a long-term growth partner rather than a pure media buyer.

What to ask if you want both brand and performance support

When evaluating providers, ask:

• How do they split budget between brand and performance?
• Do they have one team or separate brand/performance teams?
• Can they show incrementality and brand lift as well as ROAS/CAC?
• Do they handle creative testing and message development?
• How do they manage channels together rather than in silos?

If you want, I can also give you:

1. a shortlist by company size or industry, or
2. a comparison table of providers by brand/performance strength.