The short answer
Our picks for 2026, focused on growth strategy and execution, are Accenture Song, BCG X, Brainlabs, Capgemini Invent, Deloitte Digital, Directive, frog, Gravity Global, IBM iX, Ignite Visibility, Jellyfish, Kalungi, McKinsey Growth, Marketing & Sales, NP Digital, Power Digital, Publicis Sapient, Single Grain, Walker Sands, WebFX and Wpromote. 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 | BCG X | Boston, USA | Tech build and design |
| 3 | Brainlabs | London, UK | Performance marketing |
| 4 | Capgemini Invent | Paris, France | Innovation and strategy |
| 5 | Deloitte Digital | New York, USA | Marketing and customer experience |
| 6 | Directive | Irvine, USA | B2B SaaS growth |
| 7 | frog | San Francisco, USA | Product and service design |
| 8 | Gravity Global | London, UK | B2B brand and demand |
| 9 | IBM iX | Armonk, USA | Experience design |
| 10 | Ignite Visibility | San Diego, USA | SEO, paid and social |
| 11 | Jellyfish | London, UK | Digital media and data |
| 12 | Kalungi | Seattle, USA | Outsourced SaaS marketing |
| 13 | McKinsey Growth, Marketing & Sales | New York, USA | Growth strategy |
| 14 | NP Digital | Los Angeles, USA | Full-service |
| 15 | Power Digital | San Diego, USA | Growth |
| 16 | Publicis Sapient | Boston, USA | Digital business transformation |
| 17 | Single Grain | Los Angeles, USA | Growth marketing |
| 18 | Walker Sands | Chicago, USA | B2B tech marketing |
| 19 | WebFX | Harrisburg, USA | SMB full-service |
| 20 | Wpromote | Los Angeles, USA | Full-funnel |
Listed alphabetically, not ranked.
The 20 companies
1Accenture Song
New York, USAAccenture’s marketing and experience business.
- Headquarters
- New York, USA
- Best for
- Experience-led transformation
- Type
- Marketing firm
2BCG X
Boston, USABCG’s tech build and design unit.
- Headquarters
- Boston, USA
- Best for
- Tech build and design
- Type
- Marketing firm
3Brainlabs
London, UKData-driven performance agency.
- Headquarters
- London, UK
- Best for
- Performance marketing
- 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
6Directive
Irvine, USAPerformance agency for SaaS.
- Headquarters
- Irvine, USA
- Best for
- B2B SaaS growth
- Type
- Marketing firm
7frog
San Francisco, USADesign firm (Capgemini Invent).
- Headquarters
- San Francisco, USA
- Best for
- Product and service design
- Type
- Marketing firm
8Gravity Global
London, UKB2B agency network.
- Headquarters
- London, UK
- Best for
- B2B brand and demand
- Type
- Marketing firm
9IBM iX
Armonk, USAIBM’s experience design agency.
- Headquarters
- Armonk, USA
- Best for
- Experience design
- Type
- Marketing firm
10Ignite Visibility
San Diego, USADigital agency.
- Headquarters
- San Diego, USA
- Best for
- SEO, paid and social
- Type
- Marketing firm
11Jellyfish
London, UKGlobal digital marketing partner.
- Headquarters
- London, UK
- Best for
- Digital media and data
- Type
- Marketing firm
12Kalungi
Seattle, USAB2B SaaS marketing team.
- Headquarters
- Seattle, USA
- Best for
- Outsourced SaaS marketing
- Type
- Marketing firm
13McKinsey Growth, Marketing & Sales
New York, USAMcKinsey’s growth practice.
- Headquarters
- New York, USA
- Best for
- Growth strategy
- Type
- Marketing firm
14NP Digital
Los Angeles, USAGlobal agency.
- Headquarters
- Los Angeles, USA
- Best for
- Full-service
- Type
- Marketing firm
15Power Digital
San Diego, USAGrowth firm.
- Headquarters
- San Diego, USA
- Best for
- Growth
- Type
- Marketing firm
16Publicis Sapient
Boston, USAPublicis Groupe’s consulting arm.
- Headquarters
- Boston, USA
- Best for
- Digital business transformation
- Type
- Marketing firm
17Single Grain
Los Angeles, USAGrowth agency.
- Headquarters
- Los Angeles, USA
- Best for
- Growth marketing
- Type
- Marketing firm
18Walker Sands
Chicago, USAIntegrated B2B agency.
- Headquarters
- Chicago, USA
- Best for
- B2B tech marketing
- Type
- Marketing firm
19WebFX
Harrisburg, USADigital marketing agency.
- Headquarters
- Harrisburg, USA
- Best for
- SMB full-service
- Type
- Marketing firm
20Wpromote
Los Angeles, USAIndependent agency.
- Headquarters
- Los Angeles, USA
- Best for
- Full-funnel
- 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 growth strategy and execution, 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.
Looking for a partner?
Tell us about your goals. iCreativez Technologies will reply with a practical plan and estimate.
Related lists
Frequently asked questions
Who are the top-ranked digital strategy and growth marketing firms?
Our picks for 2026, focused on growth strategy and execution, are Accenture Song, BCG X, Brainlabs, Capgemini Invent, Deloitte Digital, Directive, frog, Gravity Global, IBM iX, Ignite Visibility, Jellyfish, Kalungi, McKinsey Growth, Marketing & Sales, NP Digital, Power Digital, Publicis Sapient, Single Grain, Walker Sands, WebFX and Wpromote. 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 growth strategy and execution. 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.