What is a PPC agency?
A PPC agency is a marketing firm that plans, launches, and manages pay-per-click advertising campaigns on platforms like Google Ads, LinkedIn Ads, and Meta.
These are advertising platforms where you pay each time someone clicks, rather than for impressions or placement.
The agency handles end-to-end work: keyword research, audience targeting, ad copy and creative, bidding strategy, landing page recommendations (and often design and development), conversion tracking, and ongoing optimization against the metrics that matter to the business.
What a PPC agency actually does varies by business model
The work inside a PPC agency varies more than the label suggests. A B2C PPC agency running campaigns for Shopify stores spends most of its time on product feeds, shopping campaigns, and creative iteration. A local services PPC agency promoting plumbing or lawn care businesses is optimizing for call volume and geography. A PPC agency working with a retailer will optimize for local store visits.
A B2B paid media agency like ours is optimizing for pipeline, which means managing longer sales cycles, defending against irrelevant clicks through aggressive negative keyword work, running ABM-style targeting on LinkedIn, and reporting on blended CAC and closed-won deals rather than form fills. The tactical playbooks are different enough that most agencies specialize in one of them rather than claiming to handle all of them well.
What separates a good PPC agency from a mediocre one
What separates a good PPC agency from a mediocre one is usually not platform expertise in the general sense. Every established agency knows how to run Google Ads reasonably well.
Most agencies niche down by business model because the patterns within each model reward specialization. What a "conversion" actually means, what the payback window looks like, what a healthy CAC-to-LTV ratio is, and how the buying decision gets made all differ enough that generic PPC tactics rarely produce the best results. The agencies that perform best have learned those patterns across multiple accounts in the same model.