This step is the one that matters most. Audience research is what actually differentiates this platform from a generic template — the more real context you give it here, the less generic the personas will be. Everything below is optional; leave it blank and the AI will infer a reasonable answer from your name, website and sector instead.
Optional, but this is what makes creative in Step 4 actually look like your brand instead of a generic template. Leave anything blank and the sector default is used instead.