5 Oct 2026 · @Work Force

The Atlanta growth marketing manager and performance marketer brings 12+ years of enterprise results to service businesses, contractors and B2B companies through AI-powered growth systems

Garrett Cassells, widely positioned as the #1 Atlanta digital marketer for brands that demand measurable growth, has helped generate more than $100 million in revenue across a career spent inside some of the most recognized companies in the world. His work spans The Home Depot, The Walt Disney Company, Microsoft/LinkedIn, NRG Energy, Bank of America and Thomson Reuters.

For more than 12 years, Cassells has built and scaled customer acquisition programs across enterprise, B2B, SaaS and eCommerce organizations. His results are specific and repeatable. He cut acquisition costs by 44% at NRG Energy. He lowered paid search CPA by roughly 39% at Disney. He improved ROAS 32% year over year while managing more than $12 million in paid media at The Home Depot.

Today, the Atlanta performance marketer applies that same enterprise playbook to growing businesses. As Growth Marketing & Digital Marketing Manager at Automate 360 AI, he leads go-to-market and demand generation strategy that pairs proven paid media discipline with AI-driven lead capture and follow-up.

"Big brands taught me one lesson over and over," said Cassells. "Growth isn't about spending more. It's about knowing exactly which dollar brings back the most revenue, then doing more of that. That's true whether you're managing a million SKUs or a single local service business."

A Track Record Built Inside Top Brands

Cassells' $100 million revenue impact did not come from one big win. It came from steady, data-driven improvements across many channels, markets and industries.

The Home Depot: $12M+ in Paid Media, 32% Higher ROAS

From 2019 to 2021, Cassells led demand generation and performance marketing for large-scale eCommerce campaigns at The Home Depot. He managed more than $12 million in paid media for brand partners including SupplyWorks, Barnett, Wilmar and Kimberly-Clark.

His programs spanned more than one million SKUs across Google Shopping and Paid Search. By segmenting at the SKU level and sharpening bid strategy, he improved ROAS 32% year over year. He also ran monthly technical SEO audits to keep the site healthy, indexed and visible in organic search.

The Walt Disney Company: 39% Lower Cost Per Acquisition

At Disney, Cassells served as Demand Generation & Performance Marketing Manager. He built strategy and managed global campaigns across Google Ads, Bing, Shopping, Amazon PPC, YouTube Ads and SEO.

Through bid automation, segmentation and audience refinement, he reduced paid search CPA from $22.64 to $13.71, a drop of roughly 39%. For a brand operating at Disney's scale, that efficiency gain meant far more customers for the same budget.

Microsoft / LinkedIn Sales Navigator: Better Leads Across Four Global Regions

As Global Growth Digital Marketing Manager for Microsoft-owned LinkedIn Sales Navigator, Cassells partnered with cross-channel agencies on integrated campaigns. His work covered Google, Bing, Facebook, LinkedIn, SEO, content and web analytics across EMEA, APAC, NAMER and LATAM.

His focus was lead quality, not just lead volume. Using ad personalization, form filtering and spam-lead segmentation, he helped ensure sales teams spent time on real buyers.

NRG Energy: 44% Lower Customer Acquisition Costs

At NRG Energy, Cassells managed agency performance as Senior Digital Marketing lead. He reduced customer acquisition costs by 44% through segmented portfolio bidding and audience optimization across web and phone enrollment campaigns.

He also designed the analytics infrastructure behind revenue attribution, forecasting and agency decisions. That gave leadership a clear view of which campaigns drove MQL and SQL growth.

Thomson Reuters: 100+ Signed Cases a Month for 63 Law Firms

Earlier in his career, Cassells served as SEO & PPC Strategist for Thomson Reuters' legal marketing division. He led SEO, PPC, Local Services Ads and call-only campaigns for 63 law firms. Together, those programs helped drive more than 100 signed motor vehicle accident and personal injury cases every month.

His background also includes serving as Senior Product Manager, Digital Marketing at Bank of America, and six years as Senior SEO Strategist and Paid Media Manager at SEO By Nerds.

The Growth Philosophy Behind the Numbers

What sets the Atlanta growth marketing manager apart is a simple rule: every campaign must tie back to revenue. Clicks, impressions and leads only matter if they turn into paying customers.

That rule shapes how Cassells approaches every account:

• Start with the money. Track revenue, ROAS, CPA and lifetime value before anything else.
• Segment ruthlessly. Split audiences, products and keywords until the winners are obvious.
• Cut waste fast. Move budget away from what isn't working, week by week.
• Protect lead quality. Filter spam and weak leads so sales teams talk to real buyers.
• Measure everything. Build attribution and forecasting so decisions rest on data, not guesswork.

"Most businesses don't have a traffic problem. They have a leak problem," said Cassells. "Money leaks out through bad targeting, slow follow-up and leads nobody calls back. My job is to find those leaks and close them. Once you do, the same budget suddenly produces a lot more growth."

Bringing Enterprise Results to Growing Businesses With AI

Since July 2025, Cassells has served as Growth Marketing & Digital Marketing Manager at Automate 360 AI. There, he leads go-to-market and demand generation strategy across paid media, SEO, database reactivation and lifecycle marketing.

He builds full-funnel acquisition programs across Google, YouTube and Meta designed to raise ROAS, lower CPA and speed up the sales pipeline. Just as important, he builds AI into the process. AI-enabled lead capture, qualification and nurturing help businesses respond to every lead quickly and convert more of them.

The work extends to two growth brands. Automate360AI delivers AI growth systems for contractors, service businesses and B2B and B2G companies. Consultant Dental Marketing helps orthodontic and dental practices fill their schedules with AI-powered websites and virtual receptionists.

"Small and mid-sized businesses deserve the same discipline that Fortune 500 brands pay millions for," said Cassells. "AI finally makes that possible. A local contractor can now answer every call, follow up with every lead and track every dollar, just like a national brand."

Areas of Expertise

As an Atlanta performance marketer and digital marketing leader, Cassells brings deep experience across the full growth stack:

• Strategy: Growth marketing, demand generation, go-to-market strategy, customer acquisition and integrated marketing
• Channels: Google Ads, Microsoft Ads, Meta, YouTube, LinkedIn, SEO/SEM and eCommerce
• Optimization: ROAS, CPA, LTV, audience segmentation, retargeting, conversion optimization and revenue-based bidding
• Analytics: GA4, Google Tag Manager, SA360, revenue attribution, forecasting and performance analytics
• Automation: Marketing automation, lifecycle marketing, AI automation and AI agents

He holds a Bachelor of Arts in Business Administration & Management from Nova Southeastern University. His certifications include Google Ads, Bing Ads, GA4, Google Tag Manager, Conversion Tracking, YouTube and AI Automation.

About Garrett Cassells

Garrett Cassells is an Atlanta-based growth marketing and digital marketing leader with more than 12 years of experience. Known as the #1 Atlanta digital marketer for revenue-focused growth, he has helped generate over $100 million in revenue for brands including The Home Depot, The Walt Disney Company, Microsoft/LinkedIn, NRG Energy, Bank of America and Thomson Reuters. He specializes in paid media, demand generation, SEO, analytics and AI-powered marketing automation. He currently serves as Growth Marketing & Digital Marketing Manager at Automate 360 AI.