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
Genesis is a strategic brand consultancy that helps organizations turn their unique points of difference into market advantage. We work with leaders and innovators to optimize brand, strategy, communications and investor relations. We solve strategic problems creatively and creative problems strategically...
Hive Innovative Group is the hometown of innovative creative communications. It is one of the most diversified owners-managed Advertising agency groups in Egypt & Middle East, founded in 2010 as a digital agency. Hive’s diversified talents and specialties are all gathered under the umbrella of digital...
As an aggressive and agile firm, GENESIS believes in the fundamentals of communication strategies and has developed a reputation for effective, on-target public relations, marketing and advertising. At GENESIS we believe in innovation, exploration and the mix of international with the local when it comes to...
Who Are We?Fialkov Digital is a leading marketing company in Israel, specializing in digital marketing, and advanced tools on Facebook. The company has a “Google Partners” badge.The company deals with branding and publishing in the various media, such as, Facebook, Google, Instagram, YouTube, and SEO. The...
Red Square is one of the leading interactive advertising agencies in Egypt. It was established in 2010 and within only Eight years it became a real game changer with a clear fingerprint among a whole market. Its unique balanced blend of creative and competent products, covering a wide range of local and...
Stern Ariely Saar is a top-10, award winning PR firm (Cannes Silver & Bronze Lion 2018 / Cannes Gold Lion 2016 / Annual awards at the Israel PR Association Excellence Competition), operating from a strategic business perspective and in close collaboration with marketing and product teams with corporate...
Tillison Consulting is a digital marketing agency at the forefront of the industry
Tillison Consulting is a digital marketing agency at the forefront of the industry
Tillison Consulting is at the vanguard of the digital marketing industry. Founded in 2007, Tillison Consulting has evolved into a multi-faceted digital marketing agency, managing more than £3 million in online paid advertising.Specialising in search engine optimisation (SEO), pay per click (PPC), digital...
Nigeria's Cifwep Digital Onitsha. Using creative brand representation, online reputation management, long-term digital marketing strategies and techniques, customer relationship management, website UI/UX design and development, and social media integration and marketing, an innovative digital marketing...
Navigating brands through the wondrous world of social media. We service strategy, creation and advertising. From social strategy, community management, data & reporting, creative concepting, social campaigns to video production, social and native advertising and influencer campaigns...
Spade Digital is a full service digital marketing agency, providing complete marketing solutions in the digital space. We provide intelligent, 360 (degree) digital marketing and media solutions to help your business reach it's maximum potential...
We are a creative advertising agency, ATL + Digital + BTL, for bold brands
We are a creative advertising agency, ATL + Digital + BTL, for bold brands
Somos una agencia crossmedia ubicada en Buenos Aires, que desarrolla estrategias y creatividad en todas las plataformas de comunicacion de las marcas: del online al offline y viceversa.#Hacemos en digital, ATL, BTL y pensamos en todas las direcciones.Somos #hacedorxs...
We are an Audience Targeting Platform with an innovative and truly bespoke approach to running online advertising campaigns. We offer Display, Video and Mobile brand advertising solutions along with Influencer Marketing to reach audiences through our advanced targeting features across all screens...
Red Impact (RI) is an independent Saudi advertising agency based in Jeddah. Since our humble beginnings in 2007, we have been constantly growing and building a solid client base. Our team is built on knowledge and a pin-point understanding of the local market which gives us the platform to provide our clients...
We are a creative design and advertising studio that excels in branding, graphic design, web development, social media strategy and management, seo and content development. We have over 16 years of experience and do everything internally in our creative studio. We are your marketing department...
Web Profit Maximiser is a social media marketing agency started by Dr. Adam Arnold. Web Profit Maximiser helps small and medium-sized businesses grow by generating new clients with Facebook Advertising, Google Advertising, PPC and Social Media Marketing. Web Profit Maximiser works closely in the healthcare...
Video Plus Print (VPP) is an award-winning video technology manufacturer, assisting small to large companies, government entities, educational insititutes, non-profits... achieve exponential growth.With the power of visual story telling embedded into printed products such as Video Brochures, Video Mailers...
Alpha PublicRelations offers a 360oservices such as public relations, advertisement, marketing, internet marketing, medical consulting & communication, branding and strategic communication consulting.
It is exclusive affiliate office for Greece and Cyprus of SyneosHealth (ex InVentivHealth) the global...
There’s never a dull moment in agency life. It’s because of the variety that comes with working for so many different clients, on so many different topics, with so many different communication solutions. Let us help you tell your story.
Branding and corporate identity; including audits, key...
Novella Brandhouse is a WBE-certified branding agency developing strategic marketing plans, award-winning design, and content for companies trying to scale and improve overall business performance...
Established in April 1996, Newell Ledbetter Advertising was founded with the aim of helping local professionals enhance their businesses with TV advertising. Over the years, we have developed an impressive client base, consisting of more than 70 private business owners and professionals in the dental and...
Alex Uria is a San Diegobased digital marketing agency with deep expertise in multicultural marketing, particularly in serving U.S. Hispanic audiences. The firm offers a wide range of servicesincluding web design, SEO, PPC, social media, content and video marketing, email campaigns, and eCommerce...
When we set up The Village Communications in 2012, we created what we think is the perfect structure for today’s media world. We’re small and independent, with a talented, passionate, multi-disciplinary team, we allow great ideas to flourish, and above all, we’re committed to building strong and lasting...
ADVERTISING AND COMMUNICATIONS AGENCY CREATING WINNING ADVERTISING SOLUTIONS FOR COMPANIES WORKING IN AVIATION, FINANCE, INVESTMENT, PHARMACEUTICALS, AGRICULTURE AND OTHER INDUSTRIES.We cover everything from corporate style to event management, including brochures, presentations, business cards, attributes...
9 Yards is a media and marketing one-stop-shop that has brought together a diversified pool of unconventional talents and industry experts to serve its clients in the full spectrum of the industry...
Modern Citizens is a modular communications agency that assembles the right specialties, strategy, design, performance, tech brands that demand agility, impact, and results...
lawinenstift is an Berlin located advertsing agency, which is specialized on cross media campaigns. We have a special expertise in promoting retail companies. We realize for them classic advertising and online marketing campaigns. lawinenstift has some very special departments like a google ad studio, a 3D...
SHARP are a brand response agency with a unique working methodology.
EXPERTLY LED CUSTOMER COLLABORATION THAT FUELS BRAND ADVANTAGE
We start with the end-user, literally – and we mean it.
Starting with our unique working methodology 'Co-Create by SHARP, we mobilise your consumer with cross-functional...
We were born as an entertainment website, a pioneer in the history of the internet in Brazil. Since then, we have continued to evolve to keep up with the speed of culture, technology and people. Being open to the new allowed us to build a special and different journey, which today is celebrated with the top...
The Richlynn Group is a Nashville-based agency specializing in branding, strategy, PR, influencer marketing, digital marketing, and management. We help artists, authors, tech companies, and more define their place in the world by crafting compelling brand stories and executing impactful marketing strategies...
Faster growth through creativityThe pace of change grows faster and faster.Growth is no longer an ambition for clients but a given, and driving growth quickly is now what keeps them awake at night.This is why we set up in the first place, and what continues to be the driving force behind what we do.We are an...
PromoShop Inc. is a Los Angelesbased promotional marketing agency specializing in custom merchandise, creative services, and e-commerce solutions. Since 1998, the company has partnered with global brands and small businesses to craft purpose-driven campaigns that enhance brand engagement and recognition...
Responsory is a multichannel marketing agency that excels at delivering content-rich, story-selling, measurable marketing campaigns for our client partners. In our world, marketing is not an expense, it's a revenue generating activity. It must be measured, tested and continually adjusted - so the results...
Merging strategic communications and digital marketing the right way!
Merging strategic communications and digital marketing the right way!
Since 1992, healthcare organizations of all types and sizes have called on us to make their companies healthier. With the strategy-first approach we bring to every healthcare digital marketing, branding, and advertising engagement, we deliver data-driven insights to change the way healthcare brands position...
Here at Adaptive Marketing Vancouver, we specialize in creating compelling online experiences that define who you are and what your business has to offer. It's about persuading your browsers to know that only your business can provide the relevant service or product they need. It's also about convincing...
LIFE. IT COULD BE JUST THE THING YOUR BRAND NEEDS.
LIFE. IT COULD BE JUST THE THING YOUR BRAND NEEDS.
Brands to life® is a Melbourne based creative agency. We define unique strategies that breathe new life into brands. We create ideas and experiences that spark emotion, intensify engagement and change behaviour. Life. It could be just the thing your brand needs...
Godot Media is a leading content agency with professional writers who create engaging content that can help you attract potential clients. Be it content for blog posts, web copy, eBooks, or whitepapers, Godot Media has you covered...
We are NGC. Iraq’s leading technology solutions provider and a full-service marketing and advertising agency dedicated to helping our clients create a lasting impression in the market. We started in 2009 as a young and raring to go enterprise powered by a talented and skilled team. Along the way, we...
Award WinnerRecipient of a Best Design Award for outstanding work.
Barcelona Video Production
Barcelona Video Production
Get noticed!
Barcelona video production for your brand success.We craft cinematic stories
Conveying the right message with your target audience is crucial, more so than ever. That's where we come in. We create striking visual assets that help drive your business forward and help you to remain competitive...
Harf Promotions (شركة الحرف للإعلانات محدودة المسؤولية) is an Iraqi registered company as an advertising and development firm based in Baghdad, Iraq. We simply have big hopes of transforming Iraqi vision in terms of marketing and promotion into unparalleled space. We are...
Imagine the possibilities of a creative agency crossed with a research agency.
We push brand creativity and use cool research techniques to get consumer-validated ideas to market faster, across brand creative, innovation and integrated...
Born is a creative agency with offices both in Portugal and Angola, specialised in Communication and Marketing Strategy, Brand Contents and Design. In the next 10 years we aim to be the leading company in the portuguese speaking market, connecting brands with people across Europe, Africa and Brasil...
Impulsamos relaciones entre marcas y personas Somos una agencia de publicidad que une creatividad e innovación para que tu marca se relacione con miles de personas.Buscamos los intereses de las personas en relación a tus productos y servicios.Usamos nuestra creatividad para generar una comunicación...
Every great story ever told, from The Bible to James Bond, has the same structure. Every story has a hero. The hero has a goal and employs various means to achieve it. Standing in the way of that goal is an adversary. Always. So, have you ever dared ask yourself the question: does my brand have an...
Our focus is brand, digital and fundraising... Barefoot Creative is where experience, knowledge and imagination meet.Brand: In today's crowded market, you need to stand out. Brand is more than a logo -- it is the heart of your personality, the promise you make to your customers/clients/donors. Using...
Mad 4 Marketing provides businesses with strong identities that win customers and build loyalty. Our team members have extensive experience with product roll-outs, promotions and brand launches in both the B2B and B2C arenas...
A smaller shop that carries big weight. Cleansheet Communications is located in the heart of Toronto and is led by two of Canada’s top industry veterans who have 11 agency-of-the-year wins between them over their 30-year career. We mention this to highlight what makes us different, and that is the promise...
Rogers Advertising, a full-service advertising firm, was founded in 2004 with the goal of delivering innovative advertising strategies, creative, and execution at a great value. Our aim is to develop brands, drive leads and sales, and deliver excellent results, always while doing right by our clients. The...
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.