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Your Digital Marketing Agency for Global Expansion

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International expansion doesn’t happen by accident – it happens with a solid global SEO strategy and a multilingual website built for international success.
A multilingual website is one of the most effective ways to attract new clients and generate high-quality leads in international markets.
With Concept21, you get a high-performance website tailored to each market – built to rank, engage, and grow your business across borders.
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Since 2010, we’ve delivered over 1,300 websites and supported clients in more than 100 countries. Thanks to this extensive experience, we know exactly what works — and what doesn’t. Our proven approach drives fast, measurable, and scalable international growth — without the usual guesswork.

Unleash Your Growth

OUR SERVICES


Build for Global Reach. Designed for Local Impact.
01

Analysis & Strategy

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Sharp insights, stronger outcomes. We analyze your business, audience, and market landscape to craft a localization strategy that sets your multilingual site up for global success.
02

Design & Redesign

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Websites tailored for every market. From brand-new builds to smooth redesigns - we craft scalable, multilingual sites built to engage and convert globally.
03

Website Development

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Built to perform and scale.

​We program and build your website with clean code, fast loading times, and a scalable structure for future growth.
04

Website Localization

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Rank globally. Connect locally.

​We adapt layout, tone, visuals, and UX - so your site feels native wherever it goes.
05

SEO Localization & Copywriting

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Speak their language – the right way. We create culturally relevant content in multiple languages, optimized for search intent and aligned with local expectations.
06

Expert-Guided
​AI Localization

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Smart translations, local impact.
​We combine AI speed guided with human expertise to ensure your content is accurate, culturally tuned, and ready for every audience.
07

Advertising & Campaigns

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Reach the right audience – at the right time. We run performance-driven campaigns across Google, Meta, LinkedIn and more – to drive awareness, generate leads, and boost conversions.
08

Growth-Driven Maintenance & Support

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Long-term success starts here, and we’re always here to help — from quick updates to long-term improvements. Your site stays fast, secure, and optimized for growth in every market.
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Ready to grow?

Start Now

Clients’ reviews


Our reviews on:
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This Is How We
Get You Global

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Ongoing Growth & Support

Your site keeps evolving. We monitor, localize updates, improve rankings, and support your growth — market by market.
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Your market is bigger than you think. 
One website to drive it all.

Let’s Start

Built on Trust.
​Some of Our Results.

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30.3M
Free Google
​Impressions in 1 Year
Adding 9 language versions to 1 website unlocked over 30 million free impressions in just 1 year. One site — global reach.
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2.4k
New Buyer-Intent Keywords Ranked in One Market
Thanks to our local SEO strategy, one multilingual website gained visibility for over 2,400 high-intent commercial keywords — all ranked in a single key market.
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86%
of Website Traffic
​from the U.S.
Even though the company is based abroad, our localized SEO strategy positioned the brand strongly in the U.S. market.
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26k
keywords ranked on one multilingual website
A single domain, strategically localized led to 26k new keyword rankings across multiple countries.

Our clients


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...and many more

Join Them!

Got Questions?
​We’ve Got Answers

What is a multilingual website?
A site available in multiple languages to reach and engage global audiences more effectively.
Is multilingual good for SEO?
Yes — it helps you rank in local search results and attract more qualified traffic.
Should I translate all my website content or just key pages?
Start with your highest-converting pages like homepage and service pages, then expand based on ROI.
Can I use the same keywords across different language versions?
No, each language needs separate keyword research. Different markets have different search behaviors.
How to handle duplicate content issues across different language versions?
We use hreflang tags correctly to tell search engines about language versions and avoid duplicate content penalties.
How important is content localization compared to simple translation?
Localization adapts content to culture and customs, boosting engagement and SEO. Simple translation often isn’t enough.
How long does it take to see SEO results from a multi-language website?
Initial improvements appear within 1–3 months; bigger results come in 6–8 months depending on authority and localization quality.

Your Website Still Speaks
One Language?

87%

of consumers avoid buying from websites that are exclusively in English.

Source:  CSA Research

60%

higher website visits, 47% more search traffic, and a 20% increase in conversion rates can result from localization.

Source: oneskyapp.com

That’s why Amazon, YouTube, Zalando, Facebook, and most successful global companies translate their content — to truly connect with customers worldwide.

Go global!

Now, let’s turn the cards and show you winning projects
*Take a closer look at how we’ve helped our clients achieve success with bold strategies and creative solutions.
Let’s Talk About Working Together
Choose our office:
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  • North America
  • South America
  • Europe
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