Forms and surveys capture information from leads and attach it straight to their contact record - so you qualify people before you even speak to them.
Use a form to collect the basics (name, phone, what they need) on your website or funnel. Use a survey when you want a few qualifying questions - budget, timeframe, service type - to sort serious buyers from browsers.
The real power is routing. A workflow can read the answers, tag the contact, set a custom field, and start the right follow-up automatically. A big-budget enquiry can be fast-tracked to you; a smaller one can go into a nurture sequence.
Embed forms on your site, drop them into a funnel, or send a survey link by text or email.
Tip: ask only for what you need to take the next step. Every extra field lowers completion - name and phone plus one qualifying question is often plenty.