The short answer
Our picks for 2026, focused on integrated marketing for large organisations, are Accenture Song, AKQA, BCG X, Capgemini Invent, Deloitte Digital, Dentsu, frog, Havas, IBM iX, McKinsey Growth, Marketing & Sales, Media.Monks, Ogilvy, Publicis Sapient, R/GA and VML. The list is alphabetical, not ranked, so choose based on your goals, size and budget.
At a glance
| # | Company | Headquarters | Best for |
|---|---|---|---|
| 1 | Accenture Song | New York, USA | Experience-led transformation |
| 2 | AKQA | London, UK | Digital innovation |
| 3 | BCG X | Boston, USA | Tech build and design |
| 4 | Capgemini Invent | Paris, France | Innovation and strategy |
| 5 | Deloitte Digital | New York, USA | Marketing and customer experience |
| 6 | Dentsu | Tokyo, Japan | Media and CX |
| 7 | frog | San Francisco, USA | Product and service design |
| 8 | Havas | Paris, France | Integrated network |
| 9 | IBM iX | Armonk, USA | Experience design |
| 10 | McKinsey Growth, Marketing & Sales | New York, USA | Growth strategy |
| 11 | Media.Monks | Amsterdam, Netherlands | Content, data and tech |
| 12 | Ogilvy | New York, USA | Integrated marketing |
| 13 | Publicis Sapient | Boston, USA | Digital business transformation |
| 14 | R/GA | New York, USA | Brand and product innovation |
| 15 | VML | New York, USA | Brand and commerce |
Listed alphabetically, not ranked.
The 15 companies
1Accenture Song
New York, USAAccenture’s marketing and experience business.
- Headquarters
- New York, USA
- Best for
- Experience-led transformation
- Type
- Marketing firm
2AKQA
London, UKDesign and innovation agency (WPP).
- Headquarters
- London, UK
- Best for
- Digital innovation
- Type
- Marketing firm
3BCG X
Boston, USABCG’s tech build and design unit.
- Headquarters
- Boston, USA
- Best for
- Tech build and design
- Type
- Marketing firm
4Capgemini Invent
Paris, FranceCapgemini’s innovation arm.
- Headquarters
- Paris, France
- Best for
- Innovation and strategy
- Type
- Marketing firm
5Deloitte Digital
New York, USADeloitte’s digital agency.
- Headquarters
- New York, USA
- Best for
- Marketing and customer experience
- Type
- Marketing firm
6Dentsu
Tokyo, JapanGlobal marketing group.
- Headquarters
- Tokyo, Japan
- Best for
- Media and CX
- Type
- Marketing firm
7frog
San Francisco, USADesign firm (Capgemini Invent).
- Headquarters
- San Francisco, USA
- Best for
- Product and service design
- Type
- Marketing firm
8Havas
Paris, FranceGlobal communications group.
- Headquarters
- Paris, France
- Best for
- Integrated network
- Type
- Marketing firm
9IBM iX
Armonk, USAIBM’s experience design agency.
- Headquarters
- Armonk, USA
- Best for
- Experience design
- Type
- Marketing firm
10McKinsey Growth, Marketing & Sales
New York, USAMcKinsey’s growth practice.
- Headquarters
- New York, USA
- Best for
- Growth strategy
- Type
- Marketing firm
11Media.Monks
Amsterdam, NetherlandsS4 Capital’s digital-first marketing company.
- Headquarters
- Amsterdam, Netherlands
- Best for
- Content, data and tech
- Type
- Marketing firm
12Ogilvy
New York, USAGlobal agency network (WPP).
- Headquarters
- New York, USA
- Best for
- Integrated marketing
- Type
- Marketing firm
13Publicis Sapient
Boston, USAPublicis Groupe’s consulting arm.
- Headquarters
- Boston, USA
- Best for
- Digital business transformation
- Type
- Marketing firm
14R/GA
New York, USAInnovation agency.
- Headquarters
- New York, USA
- Best for
- Brand and product innovation
- Type
- Marketing firm
15VML
New York, USACreative company (WPP).
- Headquarters
- New York, USA
- Best for
- Brand and commerce
- Type
- Marketing firm
What these marketing firms offer
Positioning and growth plans.
Campaigns and content.
Paid, owned and earned channels.
Analytics and personalisation.
Martech and CRM.
How to choose a marketing firm
- Match the firm’s size to yours.
- Check sector experience.
- Ask how channels are integrated.
- Agree measurable outcomes.
- Meet the actual team.
How we chose
These are iCreativez Technologies’ own recommendations, based on our research and experience of the market. We looked for companies with a strong reputation, visible work and clear expertise in integrated marketing for large organisations, and aimed for a mix of sizes and regions. The list is alphabetical, not ranked. Details such as roles, ownership and locations change, so confirm them directly before you engage anyone. Nobody paid to appear.
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Tell us about your goals. iCreativez Technologies will reply with a practical plan and estimate.
Related lists
Frequently asked questions
Who are the leading full-service marketing firms for enterprise?
Our picks for 2026, focused on integrated marketing for large organisations, are Accenture Song, AKQA, BCG X, Capgemini Invent, Deloitte Digital, Dentsu, frog, Havas, IBM iX, McKinsey Growth, Marketing & Sales, Media.Monks, Ogilvy, Publicis Sapient, R/GA and VML. The list is alphabetical, not ranked, so choose based on your goals, size and budget.
How do I choose a marketing firm?
Match the firm’s size to yours. Check sector experience. Ask how channels are integrated. Agree measurable outcomes. Meet the actual team.
How did you choose this list?
These are our own recommendations based on reputation, visible work and expertise in integrated marketing for large organisations. The list is alphabetical, not ranked, and nobody paid to appear. iCreativez Technologies publishes this page and is not part of the list.
How are marketing agencies paid?
Common models are monthly retainers, a percentage of ad spend, project fees or performance-based fees. Ask for a clear breakdown before signing.