The SMX 2026 conference in Munich once again served as a vital forum for the brightest minds in search marketing to exchange best practices across AI, SEO (Search Engine Optimisation), and SEA (Search Engine Advertising). This year, the conversation shifted from the “how-to” of AI adoption toward a sophisticated focus and strategic human oversight. As automation becomes the baseline, the real competitive edge now lies in how we steer these tools to drive actual bottom-line growth.
Identifying the Plateau: Shifting from ROAS to Marginal ROAS (mROAS)
Julia Riml from Preci challenged Paid Media managers to move beyond standard ROAS and track Marginal ROAS (mROAS). At Connexity, we often refer to this as the “Plateau Effect”. Following the Law of Diminishing Returns, there is a point where increasing spend yields smaller incremental returns—for instance, increasing a budget by 50% may only result in a 25% revenue growth. By calculating mROAS, marketers can identify their diminishing return limits and allocate budgets more efficiently across channels.
mROAS = Delta {Revenue} / Delta {Spend}
The Rise of the “Growth Architect”
As AI tools become ubiquitous, the role of the Paid Media Manager is evolving into that of a Growth Architect. By delegating tedious tasks like bid adjustments and keyword mining to AI, marketers can refocus on high-level strategy, creative direction, and the integration of marketing with finance. Industry expert Sam Tomlinson emphasised that successful “architects” must move away from top-line revenue and focus on profit-driven campaign structures.
Transitioning to a POAS-Driven World
The team at Megabad demonstrated how Margin-Based Bidding (POAS) led them to unprecedented levels of profitability. Traditional ROAS targets treat all products equally, regardless of their margin. By optimizing for profit, algorithms stop pushing low-margin items that drain resources. This shift results in lower costs, higher net profits, and improved buy-in from finance teams to increase marketing budgets.
Creativity in the Age of AI
In a world of massive AI adoption, messaging can easily become dull or soulless. While AI is a powerful tool for scaling content and storytelling, it is not inherently creative. The “Creative Pioneers” of 2026 will be those who master the art of prompting to achieve ultra-personalised results. The goal is to move toward an “audience of one”, where AI helps tailor creatives so effectively that every user sees themselves reflected in the ad.
The overarching theme of SMX 2026 is that the future of PPC lies in shifting our focus from volume to value by prioritising profit margins and incremental growth. By embracing the role of the “Growth Architect,” marketers can leverage AI to handle execution while they master the strategic creativity and financial rigor required to stand out in a saturated market.
