Find top international advertising agencies skilled in media buying, brand strategy, and creative development to achieve strong ROAS and measurable business outcomes. Compare agencies by expertise, location, and budget to find your partner.
Our Verified Agencies are Trusted by Top Brands:
We have assessed over 5,200 advertising agencies worldwide, examining their creative capabilities, service diversity, portfolios, client testimonials, pricing structures, and industry recognition. Learn about our ranking criteria and how we identify the top players in the advertising industry.
The Number 1 Advertising Agency as Selected by DesignRush Is:
Notable clients: Caliber Collision, BBQGuys, Warner Bros, Ebay, Ziebart
HigherVisibility offers PPC and advertising solutions, including paid search, display, shopping ads, remarketing, local service ads, custom landing page creation, and audience targeting. The advertising agency employs a hands-on approach, encompassing deep keyword research, A/B ad/image testing, bid and budget management, negative keyword lists, geo-targeting, and quality score performance.
Its technology and methodology are anchored around the Targeted Growth System®, which ensures efficient ad spend. With nods from DesignRush and Inc. 500, a sharp strategy, and stellar client service, HigherVisibility continues to set the bar for effective, accountable PPC management.
HigherVisibility demonstrated its ability to manage large, complex PPC campaigns through its work with Caliber Collision.
The agency designed a customized paid search strategy centered on precise targeting, ongoing optimization, and continuous campaign refinement. By handling keyword research, bid management, and conversion tracking, HigherVisibility ensured that every advertising dollar was used efficiently and profitably. Its approach delivered strong, measurable results, including a 323% increase in return on ad spend and a 167% increase in conversions, which helped Caliber Collision strengthen its position as a leader in the auto repair industry.
Doner is a full-service advertising agency founded in 1937 and headquartered in Southfield, Michigan, with additional offices in Los Angeles and London. Doner's approach includes diversity, inclusivity, and a modern, content-driven method tailored to today's dynamic advertising market.
Renowned for creating iconic campaigns for major brands, Doner has crafted memorable slogans like "Timex takes a licking and keeps on ticking" and "Zoom-Zoom" for Mazda. The agency specializes in retail, consumer packaged goods (CPG), healthcare, consumer technology, destination, entertainment, and automotive industries.
Doner successfully refreshed the image of the Chrysler Pacifica by tapping into cultural trends while staying grounded in real family needs.
Chrysler wanted to make the Pacifica more appealing to modern families, and the rise of the #VanLife trend created an opportunity to shift perceptions of the minivan. Doner connected this trend to everyday parenting by highlighting Pacifica’s practical, family-friendly features through engaging video content across broadcast and social media.
By blending aspiration with real-life usefulness, the campaign repositioned the Pacifica and delivered strong results, including a 143% year-over-year increase and a 95% increase in second-quarter sales.
FCB (Foote, Cone & Belding) is a globally recognized advertising agency known for its innovative and effective advertising and marketing campaigns. As part of the Interpublic Group, FCB has a substantial global footprint, with over 120 offices across over 80 countries.
FCB's impact is validated by numerous awards and recognitions in the industry, including the Cannes Lions and Effie Awards. The agency combines creative storytelling with deep insights into consumer behavior, aiming to create accessible advertisements that capture attention and drive meaningful results for its clients.
During the 2022 FIFA World Cup, Brazilian football fans wanted to support their national team by wearing the official jersey. However, the high cost of the jerseys (R$350) was a significant barrier, especially given the inflation Brazilians were facing at the time. This situation challenged FCB's client, Flash, to engage with fans and allow them to express their support.
FCB offered a 50% cashback on jersey purchases from Nike's eCommerce site in exchange for fans customizing the jersey with Flash's brand name and sharing it on social media. This campaign turned fans into brand sponsors and significantly boosted Flash's visibility, getting more than 5.1 million interactions and increasing brand mentions by 2300%.
Marketing Architects is an all-inclusive TV advertising agency, renowned for integrating technology and data into its campaigns. With its unique All-Inclusive TV model, the agency handles all aspects of a campaign, including media buying, strategy, creative development, production, and reporting. Therefore, clients pay only for media while saving on other costs.
The strategy is powered by Annika, the agency’s own AI for media buying that analyzes large datasets to optimize media placements across linear and streaming TV. Marketing Architects serves B2B and B2C clients, using TV advertising as a key growth driver.
Joybird, a furniture retailer and manufacturer primarily focused on online marketing, wanted to expand its customer base and reach new audiences through offline channels. Marketing Architects launched TV ads on linear and streaming platforms, minimizing audience overlap with Annika's help.
The campaign led to over 700,000 web visits driven by TV, over 16,000 TV-attributable orders, and 7-10X return on ad spend (ROAS).
Notable clients: Montgomery County, MD, Remote Area Medical, Parkmobile, FlyingFish, Chicago Title
The AD Agency, founded in 1982, is a full-service research, marketing, online digital advertising, graphic design, media buying, IT support, and public relations firm.
Known for its aggressive and agile approach, the award-winning agency focuses on effective communication strategies. With a reputation for on-target marketing, its expertise lies in developing brands and maximizing client visibility and impact.
The AD Agency developed a comprehensive marketing strategy for Montgomery County, MD, to promote yard waste recycling. The multi-faceted campaign included a strategic marketing plan, a new branding and logo, and diverse advertising efforts across print, radio, and TV. Key to the campaign was engaging, information-rich content paired with an emotional appeal to change resident behavior.
The initiative featured full-page newspaper ads, a grasscycling campaign, TV commercials, public relations, community outreach, and direct mail. It also introduced "Digger the Worm" in a school natural science project. Thanks to this approach, Montgomery County, MD achieved the desired behavioral change and gained national and local recognition.
Notable clients: UPN, Masport, Custom View, The Waterford, NCBVI
PLAY Creative Design is an advertising agency that prioritizes strategy development before launching creative tactics. It achieves results through campaign engagement, targeted messaging, and a blend of print and digital media.
PLAY Creative grows businesses through website optimization, quality messaging, and precise media management, increasing brand awareness, customer retention, and lead generation. It serves businesses in the finance, higher education, and tech industries, as well as small businesses.
Unite Private Networks (UPN) faced the challenge of effectively targeting businesses in six specific locations. PLAY Creative decided to focus on LinkedIn and Google Display Advertising. It created dedicated ad groups for each location, combining precise targeting with tailored landing pages and submission forms for more efficient lead generation.
The campaign’s results outperformed industry standards for both platforms over 3.5 months.
Notable clients: CALM, Volkswagen, Team Heroine, National Lottery, Marmite
DDB is an advertising agency that uses emotionally driven solutions to influence consumer behavior and choices. Driven by its "Unexpected Works" mantra, it strives to create work that drives behavioral changes and achieves significant business results.
In response to the UK's escalating suicide rate in 2022, DDB partnered with CALM and ITV to fight the suicide crisis by changing public perception. "The Last Photo" campaign featured an exhibition of 50 last photos of suicide victims and a 90-second film distributed across television, cinema, outdoor, digital, and social media channels. It also directed the audience to CALM's website for suicide prevention.
"The Last Photo" drew over 500,000 visitors to the exhibition, reached 7.5 million people through live TV, and generated 1.6 billion impressions. Additionally, it became the most talked-about video on Reddit globally for 48 hours and increased online discussions about suicide by 33%.
Financially, it led to a 400% year-over-year rise in donations to CALM. Most significantly, the campaign was crucial in preventing 161 suicides in the six months following its launch.
With offices in major cities worldwide, Wieden+Kennedy (WK) is a global, independent advertising agency known for transforming some of the world's most famous and fascinating brands for over 40 years. It has earned several accolades, including Emmy Awards and recognition as global agency of the year.
W+K provides world-class creative, media, social, design, and strategy services with a core mission: to use creativity and influence to change the world and shape culture. The agency gained fame for its work with Nike, crafting the iconic "Just Do It" tagline.
Nike faced the challenge of promoting women's fitness and sports. W+K created the "Better for It" campaign, inviting women globally to share their fitness journeys and personal bests.
This campaign included "Margot vs Lily", a scripted series about two sisters with differing fitness goals, directed by Tricia Brock. It also launched Nike's first Tumblr site and short films "Inner Thoughts" and "Last," encouraging women to share their fitness missions.
"Margot vs Lily" led to 3.5 million downloads of the Nike Training Club App and inspired two million new workouts. The campaign's Tumblr quickly gained 175,000 followers, becoming the most reblogged fashion brand of 2015. Moreover, two months after the campaign's launch, Nike's women's division sales increased by 20%.
Notable clients: De'Longhi, Samsung, ESPN, Ad Council, Little Caesars
McKinney is a full-service integrated agency with 54 years of experience specializing in strategy, creative development, production, and digital measurement. It includes a full media entity and provides a wide range of services, including media strategy, activation, and optimization.
Its philosophy is to provide clients with a perspective that differs from the Madison Avenue standard. Recognized for creativity and effectiveness, McKinney has been named a top agency by Adweek, Campaign US, and Influencer Marketing Hub.
De'Longhi, known for its espresso machines, wanted to expand into the North American automatic coffee machine market. McKinney launched the TrueBrew campaign starring Brad Pitt to highlight the machine's appeal in a realistic, emotionally resonant way.
The campaign increased brand engagement by 134% compared to the previous three months and led to strong sales, reaffirming the success of the celebrity-driven strategy.
Grey is an advertising agency with over a 100-year legacy. Its expertise includes advertising, communications, and design, especially in the health and wellness industry. Grey is part of AKQA, an international family of autonomous agencies.
Its "Famously Effective" approach produces memorable and highly effective ads. The agency taps into "Cultural Value" to understand what resonates in society and culture, ensuring its campaigns connect deeply with audiences and achieve results.
Dole Sunshine Company wanted to address the stigma associated with the "forbidden fruit" to encourage healthier eating and start a global discussion about the importance of fruit. The agency humorously requested Pope Francis to rebrand the fruit's bad image, suggesting a biblical revision to replace "fruit" with an unhealthy snack.
The campaign was launched on International Fruit Day 2022. It generated over 55 million media impressions and appeared in 784 media outlets, including Design Taxi and Bloomberg, earning $2.2 million in media value. This innovative approach significantly raised awareness about the benefits of fruit and a healthy diet.
To select the top advertising companies, we reviewed their testimonials, case studies, industry reputation, team expertise, client roster, and executive management. Our team of agency experts developed a scoring system to measure their overall performance based on several important factors:
Reviews: Quality of work, client satisfaction, and level of trustworthiness
Portfolio: Tangible examples of an agency's track record
Awards and press: Industry reputation and innovation
Team bios: The agency’s qualifications and team dynamics
Top services: Core competencies and areas of expertise
Gallea Ai is an AI strategy and implementation consultancy helping companies adapt their digital presence for the era of artificial intelligence. As platforms like ChatGPT, Gemini, and Perplexity become the new discovery layer of the internet, businesses are facing a fundamental shift in how customers...
Hey, my name is Michele Salati. I'm a visual storyteller with over 20 years of experience.Working across different media formats by forging interdisciplinary collaborations with creatives from the arts, developers, and roboticists incubating work that transcends a single type of expertise...
The Only Mobile and Display Adverting Experts You Need
The Only Mobile and Display Adverting Experts You Need
By combining digital and traditional worlds, we've developed technology to collect and analyze mobile data for unique insights about user characteristics. With this information, our detailed analyzes empower customized advertising campaigns that match the needs of each individual recipient bringing relevancy...
PrimeGate Digital is a result-driven digital marketing agency that operates beyond conventional digital marketing strategies to deliver exceptional performance and results for our clients. Our team at PrimeGate is dedicated to providing innovative solutions to drive positive outcomes for businesses in the...
RR Media is a Howrah-Kolkata based digital marketing agency specializing in WhatsApp Business API solutions SMS and voice call marketing website design and SEO. We also build our own SaaS tools including a WhatsApp Business API panel an AI powered SEO platform and billing and LMS software for growing...
Rood Design, led by Torjan Rood Vastveit, is a specialized design studio focused on creating impactful brand experiences across various media platforms. With a keen eye for detail and a passion for creativity, we strive to elevate brands through innovative and compelling design solutions...
NEOM is an independent Italian creative design studio with 28 years of expertise in branding and package design. We collaborate with major companies in both the Italian and international markets...
CRC is a multinational group of strategists, storytellers, filmmakers, producers, designers, animators, and directors with its headquarters in New York City. We work with clients to find their voice, tell their story, and astound both customers and employees, from rapidly expanding startups to Fortune 100...
FSC Interactive has dominated the Greater New Orleans region's social media market since 2009. FSC has continued to support clients through the evolving technology and strategies of social media, paid search, SEO, and content marketing as the first New Orleans marketing agency to launch a social media...
Serena Tiffany, a dynamic designer hailing from Saskatoon, Saskatchewan, grew up in a small town, which has fostered her profound appreciation for community and creativity...
At Azaber, we specialize in crafting cutting-edge digital experiences that enable our clients to expand their customer reach. Our comprehensive services encompass web development using pure code or platforms like WordPress or Drupal CMS, innovative web design, and application development utilizing Java...
Experiential Design, Development and Strategy Redefined
Experiential Design, Development and Strategy Redefined
Tablo Noir is your end-to-end branding and design partner bringing strategy, creativity, and cohesion together to build brands that don't just look the part, but play it...
PPC.co has worked on the digital marketing campaigns of SMBs and Fortune 500 companies for more than 10 years. They have completed over 3,000 successful client engagements, and consistently produce results for both small and large clients...
For businesses looking to maximize their online presence and ROI, there's only one choice - EBS Agency. With a certified team of professionals that have mastered the art of digital marketing excellence, they pride themselves on leveraging data-driven creativity backed by proven results for clients. Plus, you...
Digital Marketing & PR agency for local to international CPG, F&B, Tech, e-commerce/retail brands.
Digital Marketing & PR agency for local to international CPG, F&B, Tech, e-commerce/retail brands.
Popcorn is a premier digital marketing and public relations agency in Vancouver and Toronto. We specialize in connecting people with the brands they love. At the core of our approach is creating compelling visual content and developing authentic community-building strategies. Our passion for connecting people...
We are a tech agency building high-impact digital experiences for communities and brands. We specialize in Discord, Telegram ecosystems, web development and design and full-stack development blending strategy, design, and code to turn audiences into loyal, active communities and users...
Attract more customers with our high-converting, targeted ad campaigns.
Attract more customers with our high-converting, targeted ad campaigns.
Welcome to Aura, your premier Digital Advertising Agency in Cuauhtémoc, Chihuahua, Mexico. Specializing in Facebook Ads | Meta Ads, we craft powerful campaigns on Facebook, Instagram, WhatsApp, and Audience Network. With a strong focus on data-driven results, we ensure your investment translates into...
A-Train Marketing is a full-service marketing firm with offices in Denver and Fort Collins, Colorado. We provide organizations, charities, and social causes with award-winning branding, messaging, strategy, advertising, and online, and digital solutions to help them make smart marketing choices and stand out...
Connecting the World with Cutting-Edge Digital Solutions: Dubai-Amman-London
Connecting the World with Cutting-Edge Digital Solutions: Dubai-Amman-London
At QTech Networks Dubai, we take pride in our unwavering commitment to reliability, credibility, and creativity. Our team of senior developers boasts years of experience in web development, hosting solutions, and online marketing. We have honed our skills through partnerships and collaborations with leading...
Blue Winds Media is your go-to digital partner to amplify the success of any business. With over five years of experience in marketing automation, SEO optimization, and societal outreach, you can be sure that we'll help boost your small or medium-sized biz into a dynamic dynamo! We've successfully increased...
Our company is an expert in crafting digital solutions for any and all of your needs. From website design to online marketing, we have the tech savvy expertise required to make sure that you stand out from the rest while also giving you a competitive edge!...
Agência Fang is a Rio de Janeiro-based creative marketing agency connecting strategy, design and technology. We help businesses, brands and artists grow their digital presence through social media, branding, SEO, paid media, websites and audiovisual production. Our multidisciplinary approach brings creative...
Creative Communications With Commitment, Honesty, And Craft
Creative Communications With Commitment, Honesty, And Craft
The Mantooth Company is a full-service marketing agency. We're skilled storytellers. We also offer committed, truthful, and artistic imaginative interaction to help businesses and organizations express their own stories and strengthen their connections and brands...
Impactful Digital Marketing That Drives More Customers
Impactful Digital Marketing That Drives More Customers
Australian Internet Advertising is a full-service digital marketing agency with a presence throughout Australia. Our goal is to help businesses maximize their online marketing investments through our comprehensive services, including search engine optimization (SEO), expert management of Google Ads, and...
At Redwind Infotech, we handle your marketing efforts so you can concentrate on your business operations. By partnering with us, you'll gain access to a talented and dynamic team of professionals passionate about driving your business's growth...
At Smartico, our goal is to offer publishers, newspapers, media companies, and weeklies the best full-service banner creation solutions to transform SMB print advertisers into successful digital campaigns. We aim to provide the highest quality and most effective solutions to drive results and achieve their...
Can't wait to take care of your idea and turn it into a great product!
Can't wait to take care of your idea and turn it into a great product!
Design studio with 15+ years experience in Packaging Design, Corporate Identity, Advertising and Marketing materials.Specialized in the cosmetic, medical and food fields and I can take care of all steps of your new project from the first sketch to the final printing files...
As a comprehensive advertising agency, we set ourselves apart by intentionally avoiding pigeonholing in any particular niche. Our philosophy is rooted in the idea that having only one tool can lead to seeing everything as a nail. By embracing this diversity, we adopt a holistic approach to your marketing...
We solve tough business challenges through trusted insight and unbound imagination.
We solve tough business challenges through trusted insight and unbound imagination.
At our core, we utilize trusted insight and unbridled imagination to tackle complex business problems head-on. With our innovative approach and strategic thinking, we strive to provide our clients with tailored solutions that not only meet their immediate needs but also set them up for long-term success...
With over 20 years of experience in website design and online marketing, our accomplished team of professionals have been helping clients all around the world maximize their internet visibility. Our impressive list of satisfied customers ranges from large multi-national corporations to local businesses...
Creatively adorned mark maker, typographer, designer, and educator; working to propel an organizations brand presence in a variety of creative and innovative ways...
Your experts for affiliate and partnership marketing. Tailored solutions on a global level.
Your experts for affiliate and partnership marketing. Tailored solutions on a global level.
upaffiliate Digital Marketing GmbH is a professional affiliate marketing agency based in Berlin. Our company is distinguished by providing top-notch global affiliate marketing strategies for corporate clients. Our expertise lies in assisting these clients with the development, enhancement, and optimization of...
Market to the World, and the World will be your Market.
Market to the World, and the World will be your Market.
CAYK Marketing has been a leading force in marketing for nearly thirty years, specializing in website design, SEO, advertising management, and strategic planning. With a focus on your organization's success, CAYK offers decades of proven experience, whether you require a technical audit or comprehensive...
Ray Rico Freelance, which was founded in 2007, has developed into a full-service marketing firm that provides the best in Memphis and beyond. To produce the best responsive web design, search marketing, and social media, our interactive team works together...
INGENIO DS is a Design Agency that is specializing in Strategic Communication and Branding, founded in 2006 by Mauro Aramendy. It´s work with different range of clients from start-ups to organizations of all types and sizes creating memorable communications that grabs in target audiences and generate...
You might consider us idealists, but we are the changemakers.
You might consider us idealists, but we are the changemakers.
ATTIC is a boutique film and commercial creative content production agency. We strategise, visualise, concept, create, and produce all through a cinematic lens. We are a one-stop content production house...
Transforming your digital presence with Parqa, a full-service marketing agency
Transforming your digital presence with Parqa, a full-service marketing agency
We are a digital marketing firm driven by our passion to aid companies in their growth journey. Our objective is to elevate our clients' online visibility, which leads to an increase in website traffic, brand recognition, and ultimately, a boost in clientele...
A Trusted Digital SEO Agency Focused on Online Promotion of Brands
A Trusted Digital SEO Agency Focused on Online Promotion of Brands
Five Media specializes in creating quality content and productive SEO strategies for websites. The company has a long-standing history in the advertising field and is committed to providing its expertise to its clients...
Creating Success through High-Performance Marketing
Creating Success through High-Performance Marketing
At iMarketings.eu, we specialize in supporting U.S. eCommerce companies in expanding their business operations in the European and Scandinavian markets. Our goal is to help these companies reach new customers, increase revenue, and establish a stronger presence in these regions...
Ignite Productions is a veteran-owned field marketing and experiential agency that helps consumer brands create, execute, and measure large-scale brand activations across the United States. Founded in 2018, the company combines experiential marketing, event staffing, product sampling, retail programs...
Simona Bunardzhieva (simoneone) is a Graphic Artist & Illustrator, Maker, Speaker, and Educator. With over ten years of expertise, she excels in illustration and lettering. Her diverse portfolio includes packaging, editorial work, children's books, branding, murals, events, and installations...
We are Activate. We are a professional agency on which you can give your trust. Christchurch Web Design and Graphic Design agency. Our professionality is to design and develop customised websites for your needs...
SMQ Consulting offers data-driven services to help businesses expand and optimize their online presence. We're experts at digital analytics, SEO, digital advertising, and conversion optimization, and we bring creativity, passion, and excellence to every project we take on. We're especially passionate about...
Let us introduce you to MIU Creative Agency – a revolutionary digital solutions team that's changing the way driven brands communicate their purpose. With an endless arsenal of visual creatives at your disposal, our expert designers will make sure that no marketing need goes unmet! Get ready for unlimited...
We help our clients increase their sales by enhancing their online presence by utilizing our knowledge of the products, construction techniques, and the channel...
Applying the principles of science to ensure ethical marketing practices
Applying the principles of science to ensure ethical marketing practices
Lab Coat Marketing was founded on the principle of incorporating data and experimentation into digital marketing. In a market cluttered with outdated practices and superficial reporting, we stand out as a marketing partner that aligns our efforts with your business goals...
We help brands succeed in the digital age by creating wonderful digital websites, products, experiences, and campaigns always with a little sprinkling of magic...
What should you consider before contacting advertising agencies?
Before contacting ad agencies, you must define your priority business objectives, success metrics, ad spend limit, expected timeline, internal decision-maker, and available resources.
Without that foundation, agencies will make different assumptions, which can make proposals difficult to compare and lead you to hire agencies for the wrong problem.
With 71% of CMOs reporting that they lack the budget to fully execute their strategy, it is vital to distinguish between "must-have" and "nice-to-have" campaign features before the first discovery call.
When should you hire a specialist advertising agency vs. a full-service digital marketing agency?
Hire a specialist advertising agency when you are experiencing issues with paid media execution and results. Conversely, hire a full-service digital marketing agency when the larger problem is coordination across channels, brand, content, and web.
Consider specialized ad agencies when:
Paid search, paid social, or media buying is your growth lever, but performance is inconsistent.
You already have brand, web, and content support in-house.
You need faster testing, tighter optimization, and deep platform expertise (e.g., Google Ads and paid media).
Consider full-service digital marketing agencies when:
Your message, funnel, creative, and channel mix need to work together.
You want one partner for different marketing services, such as social media, search engine optimization, email marketing, and performance marketing.
The primary issue is fragmented execution and not just ad performance.
How much should you realistically budget for advertising?
A realistic advertising budget typically ranges from 5% to 15% of your total annual revenue, depending on your growth stage and industry competitiveness.
For example, small businesses typically dedicate 2%-4% of their revenue to PPC advertising, with aggressive, growth-stage organizations typically spending more.
As a market benchmark, Gartner's 2025 CMO Spend Survey found CMOs reporting marketing budgets at 7.7% of company revenue and paid online channels accounting for 69% of digital spend.
The practical takeaway is to ask each shortlisted agency for a minimum viable testing budget by channel, then reject plans that cannot generate enough volume to prove or disprove the strategy.
How should you measure the success of your advertising campaigns?
Measure the success of your advertising campaigns by tracking bottom-line outcomes.
For lead generation campaigns, success metrics may include qualified leads, cost per sales-qualified lead, close rate by source, and pipeline contribution.
For eCommerce brands, success metrics to consider include customer acquisition cost, contribution margin, repeat purchase behavior, and return on ad spend (ROAS).
While platform metrics, such as click-through rate (CTR) and cost per click (CPC), are valuable, consider these as diagnostic metrics rather than success metrics.
How long does it take to see the results of your advertising campaigns?
Advertising campaigns may produce results within a few weeks or days. However, sustained ad performance may take 1-3+ months.
Typically, ad agencies dedicate the first 30 days to campaign ramp-up, data gathering, experimentation, testing, and conversion lag.
Then, they allot days 31-60 for campaign optimization. After 90 days from the campaign launch, you may record tangible outcomes, such as increased leads, higher ticket sales, and revenue growth.
The actual timeline before you see results will depend on current performance, ad channel, ad quality, target niche, industry competition, and the aggressiveness of your advertising campaign.
What common mistakes do businesses make when choosing their ad agencies?
Common mistakes include choosing based on the lowest hourly rates, being overly influenced by the pitch, and failing to confirm ownership of accounts, data, and reporting.
To avoid these mistakes, look for data-backed case studies that match your industry, market niche, and campaign type.
Also, review client feedback and request client references to better understand the agency's project management style, account ownership practices, reporting standards, and approach to campaign optimization.