Sales Development Representative (SDR)

What the role actually does

An SDR takes raw leads and target accounts and turns them into qualified opportunities. That means researching prospects, initiating outreach (cold calls, emails, LinkedIn messages), running enough discovery to confirm the prospect actually fits the target profile, and booking a meeting or demo with an account executive (source: SalesHive). The SDR does not pitch the full product, negotiate pricing, or close anything. Their output is a calendar invite, not a signed contract.

Why this separation matters

Splitting prospecting from closing isn't bureaucratic overhead, it's a specialization play. Prospecting requires volume, resilience, and pattern recognition across hundreds of cold conversations. Closing requires deal strategy, negotiation, and stakeholder management on a handful of live opportunities. Asking one person to do both well is asking for mediocrity at both. Companies that separate the two functions let SDRs get very good at the top of funnel while AEs focus entirely on advancing and closing what's already qualified (source: sdr-aas.com).

If you're building or buying into a sales org, understanding this split tells you where accountability actually sits. An SDR missing quota means the pipeline is thin. An AE missing quota means qualified opportunities aren't converting. Conflating the two makes it impossible to diagnose which part of the machine is broken.

The common confusion

Outsiders (and plenty of insiders) use SDR, BDR, and AE interchangeably. They shouldn't. An SDR usually works inbound leads that have already shown some interest, qualifying them before handoff. A BDR (Business Development Representative) more often works outbound, hunting cold accounts that haven't raised a hand yet. The AE is the one who actually runs the sales cycle from qualified meeting to closed deal. Titles vary by company, so always check what the person is actually compensated on before assuming what they do.

How the role gets measured

SDRs are judged on activity and qualification metrics: calls made, meetings booked, and critically, how many of those booked meetings hold and convert into real opportunities. A high meeting count with a low show-and-qualify rate is a red flag, it usually means the SDR is optimizing for volume over fit. The real measure of a good SDR isn't how many meetings they book, it's how many of those meetings the AE actually wants to have again.