Before briefing an agency, study structure rather than logos: the strongest B2B SaaS explainers lead with a problem the viewer already recognises (not a company intro), show the product inside a real workflow rather than listing features, stay under 90 seconds, and match the CTA to where the video lives. Everything Design’s breakdown of homepage explainer videos from companies like Chili Piper, Salesloft, 6sense, and Intercom walks through these patterns, and Everything Film’s work shows how they carry into B2B production.