For a fast ROI in 2026, PPC is your go-to. It delivers immediate traffic and potential leads, making it ideal for rapid scaling. However, it can be costly if not managed well, as mentioned earlier by others. SEO, while slower, builds long-term growth without the ongoing cost per click. A balanced approach, leveraging both PPC for quick wins and SEO for sustainable growth, is often the most effective strategy, but the most difficult. If you aim to scale quickly, start with PPC and gradually integrate SEO to maintain stability and have to worry about losses too heavily at the start.