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
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
911ADV is a wide range of advertising services for rapid business development. It is with us that you can not only order the development of a unique corporate identity and placement of advertising in the media , but also comprehensive management of a turnkey advertising campaign. In addition, we create...
Midwest Horizons Marketing helps businesses and organizations grow through digital ads, event promotion, and authentic storytelling. Woman-owned and veteran-family proud, we combine local heart with data-driven strategy to deliver results that outperform national averages...
Making a Much-Needed Difference in Small Business Branding
Guild Creative is dedicated to assisting small businesses in triumphing over their sales, marketing, and small business branding hurdles. With a track record dating back to 1999, we have become the go-to choice for B2B companies seeking exceptional value, extensive expertise, and a sense of security...
Topnotch SEO is a team of New Zealand-based SEO experts committed to helping businesses get the visibility they need to grow exponentially. With years of experience in achieving top results for our customers, we create tailor-made plans that are unrivalled and designed to deliver quality and maximum impact...
Our mission as a digital marketing and design agency in Central Ohio is to help businesses realize their full brand potential online through story-based web design and results-driven digital marketing strategies...
At Popskull, we believe that in today's constant white noise of advertisements and messages, it can be hard for brands to stand out. That is why our team strives to create clear strategies and campaigns capable of cutting through all the chaos...
Ashdown Advertising is a Cedar City performance marketing agency that connects paid media, conversion-focused landing pages, SEO, CRM automation, and attribution into one accountable growth system. Our four-person team helps home-service, professional-service, and B2B companies generate qualified...
Ciente.io is a Dubai-based B2B demand generation and Advertising agency in Dubai that helps technology companies, SaaS providers, and enterprise brands accelerate revenue growth through high-quality lead acquisition and performance-driven marketing strategies...
KLDS is a boutique brand and creative studio based in Toronto, working with clients in the hospitality, fashion, luxury, beauty and culture. KLDS helps brands enhance perception, build trust, and grow through distinctive design that performs...
Nous proposons la création de sites internet sur mesure, le référencement naturel (SEO). Nos services s'adressent aux professionnels, artisans et entreprises. Contactez-nous pour un devis personnalisé et découvrez nos offres adaptées...
We are a branding + digital agency who integrates strategy, planning, copy and design to create communications that ultimately cultivate a more meaningful connection between brands and audiences...
Google Ads & Merchant Center Experts helping eCommerce brands grow smarter.We fix suspensions, optimize campaigns, and drive sales across Search, Shopping, and Performance Max...
Audience-First Channel Strategies that Increase Revenue
97th Floor is the number one digital marketing agency built to create pipeline and revenue for clients by crafting and executing custom, audience-first channel strategies that deliver bottom-line results...
Cinema-quality video. Produced in days, not months.
Fusion Media AI is a Tampa studio producing broadcast-quality commercials and brand creative for product and service brands nationwide. Human creative direction leads, AI generates the footage, and every frame is hand-finished to broadcast standard. First cuts arrive in 3 to 5 days at 50 to 70 percent less...
Weber Associates is a Columbus, Ohio based B2B sales and marketing consultancy founded in 1985. The agency helps enterprise and Fortune500 clients clarify their value, streamline sales processes and create compelling marketing through go-to-market strategy, proposal writing and digital marketing support...
Belong Creative | Creative Communications Agency Sydney
Belong Creative stands out as a premier branding agency in Sydney, committed to fostering a profound sense of belonging for brands, designs, and content. Through our innovative approach, we strive to create a cohesive identity that resonates authentically with the audience, establishing a lasting connection...
Read between the lives and write between the lines.
I believe that punctuality, rules, and precision are essential, but if you want to do something remarkable, you must think outside the box and abandon reason. Without, however, stopping to reason...
social media marketing & seo for local & global brands.
Social media agency that prioritizes long-term client relationships and focuses on helping businesses acheive their goals. Our intent is all for your delight...
Smashdoor Marketing is a full-service marketing and media agency dedicated to achieving your goals through exceptional customer service, advanced technology, and data-driven strategies. Our commitment to thorough research ensures that we deliver targeted and effective marketing solutions tailored to your...
At La Teva Web, we are the leading web design and digital marketing agency in Barcelona. We create for all our clients the best custom web designs, completely unique and personalized to the values and solutions of their company...
First Call Solutions helps businesses grow through performance marketing, lead generation, and pay-per-call solutions. We specialize in delivering high-quality leads, inbound calls, and customer acquisition solutions across insurance, healthcare, home services, legal, and financial industries. Our focus is on...
Google Ads, Meta Ads, Web Design & AI Tools That Drive Real Business Growth
Adelaide Socials is a boutique performance marketing and technology agency. We run Google and Meta campaigns, build high-converting websites, and develop AI tools that give your business an unfair advantage...
We brand startups from scratch, giving them a name, positioning and identity that announces their arrival with a bark. We use creative design paired with strategic thinking to take established brands to the next level. And we help businesses launch new products or services...
We focus on foundational projects that help organizations establish an organic presence online in preparation for new AI Generative Search. We also use a combination of traditional advertising and new programmatic digital targeting to promote high-buying-intent content to your best audiences...
Experts in Website Design, SEO & Digital Marketing for Home Services and Local Businesses
A results-driven digital marketing agency specializing in website design, SEO, PPC, and social media marketing. With offices in Annapolis, MD, and St. Petersburg, FL, we help businesses across the United States and beyond attract high-quality leads, boost conversions, and drive revenue growth...
We work hard to treat your company like royalty while offering a full range of services with a client-centered approach. Our company is built to develop, execute, and provide insights for your ideal marketing strategy at a cost that won't break the bank...
Berk Hospitality Group is a Scottsdale, Arizona paid media agency, a certified Google Partner and a Meta Business Partner. We run Google Ads, Meta, Local Services Ads and YouTube for home-service businesses plus consumer brands across the US and Mexico...
Since 2011 Phoenix Marketing, Graphic & Web Design has provided thousands of clients with award-winning websites, effective graphics and innovative digital and print marketing that is delivered both on time and under budget while never sacrificing superior customer service...
Masters of the Mindcraft: Crafting Brands the World Adores.
At MindMarks, our team comprises a dedicated group of experts encompassing, marketers, designers, publicists, and strategists. We believe in those who challenge themselves to be exceptional. We promote a new generation of companies that dare to question what is established and think differently...
Digital Marketing Agency in USA | Web Dev, Local SEO, SMM
Digital Growth Catalyze LLC is a leading digital marketing agency based in the USA, specializing in web development and SEO. We help businesses enhance their online presence, drive organic traffic, and dominate search rankings in the U.S. market...
Cornerstone Marketing Agency helps law firms and service-based businesses increase visibility in both traditional search and emerging AI-driven discovery platforms. Based in Baton Rouge, the agency specializes in Answer Engine Optimization (AEO), structured data strategy, digital advertising, and growth...
A New Face. A Distinct Personality. A Cinematic Presence.
Bryan Stenler Studios is a Brazil-based AI-native creative production studio specializing in cinematic AI video, virtual actors and models, premium branded content, visual effects and original entertainment IP. Founded by award-winning filmmaker Alex Viegas, the studio combines human-led creative direction...
On-Site Content. Fully Managed Social Media. One Local Team.
Local Social is a Palm Beach Gardens-based social media management agency handling strategy, on-site photo and video production, editing, captions, publishing, reporting and paid amplification. We work with local and regional businesses that want consistent, professional content without building an in-house...
At Hewitt Matthews, we strive to be different in the Digital Marketing Agency space. Rather than focus solely on results, our agency puts an emphasis on client-focused service and approachability. We believe that communication and proactivity are keys to success when it comes to delivering Paid Media &...
BRANDSHAPE is your dedicated partner in crafting a brand that not only stands out but thrives. We believe that your brand is more than just a logo; it's the heart and soul of your business. That's why we take a comprehensive approach, blending cutting-edge web design with captivating social media strategies...
At Studio Brand Collective, we believe in the power of human connection, transforming it into creative marketing campaigns that reach and engage customers.By utilizing multi-device capabilities as well as personalized design elements customized to each lifestyle, our team is dedicated to building brands...
Adsformance, a digital marketing and advertising agency, develops brand narratives through a fusion of creativity and data-driven insights. Its innovative approach combines machine learning with consumer feedback, crafting resonant content that drives engagement. With a seasoned team of strategists and media...
Bold designs for bold visions. We are a creative branding design studio in Northern California specializing in brand identity, graphic design for print, book & publication design, web design, and digital marketing...
Structured Communication For Serious Business Decisions
Okazaki Graphics is a corporate communication design studio helping companies, organisations, institutions, and growing brands turn scattered business information into structured profiles, reports, presentations, proposals, brand identity systems, and market communication. We bring order to the thinking...
At Battle Branding, we are a full-service web design agency committed to assisting businesses in crafting, positioning, and fortifying their brand identities. Our dedicated team of experienced professionals specializes in tailoring custom branding strategies, implementing effective marketing tactics, creating...
Driving Revenue Through SEO, PPC & Data-Led Growth. Search Smarter. Grow Steadily.
Smarketa is a performance-focused digital marketing agency helping eCommerce and service-based businesses and SaaS companies grow through SEO, Google Ads and paid social advertising. We combine technical expertise, creative thinking, and advanced analytics to increase visibility, generate qualified leads, and...
Planet Solutions specializes in crafting comprehensive Strategic Marketing Plans encompassing both digital and non-digital channels, strategically designed to drive sales for your business. Our emphasis lies in developing plans that prioritize essential processes, precise measurements, and deploying marketing...
Notorious Creative Agency builds client acquisition systems. Paid ads on Meta and Google, conversion-focused landing pages, a fully configured CRM, automated nurture and retargeting, and AI appointment setting that contacts every lead in under five minutes, 24/7 assembled into one owned pipeline...
ALFI is a profit-focused Amazon growth partner founded by Naeela Shah, built on real-world experience scaling and exiting successful brands. With a background in computer science and leadership experience at Toyota Canada, the agency combines strategic thinking with hands-on execution to help high-revenue...
Cast Iron LA is a full-service creative agency in Los Angeles built for brands doing $5M to $50M in revenue. Founded by Luis Ramirez (art director) and J. Barbush (copywriter), we bring 30+ years of combined Fortune 500 experience to companies that need real creative strategy without the overhead of a...
Creatiboost is a sales-focused digital marketing agency that helps businesses scale through data-driven SEO, Google Ads, Meta Ads, marketing automation, and growth strategies. With over 12 years of experience, 500+ campaigns delivered, and clients across Spain, Latin America, and the United States, the agency...
Blue Heron Marketing is Gulf Coast premier full-service digital marketing agency, headquartered in Gulf Shores, AL. We help local and regional businesses grow online through Google Ads (PPC and LSA), Meta/Facebook Ads, SEO, Google Business Profile management, content marketing, and social medi...
Agency220 is a Billings, Montana based small business marketing agency delivering custom web design, SEO, social media, podcast production, and print/digital advertising all focused on organic, long term growth. Since rebranding from Rim Advertising, Agency220 has built a reputation for helping local...
Every company is home to a unique story. TriAd specializes in finding those stories and telling them in ways that capture attention and compel action. We'll help identify your story, and work closely with you to create marketing communications that resonate with your audience, sell your products and build...
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.