Sales Development Representative (SDR)

Sales Development Representative (SDR) is typically responsible for qualifying leads that have shown interest, often through marketing channels. The role bridges marketing's lead generation and the closing work of account executives, sitting at the most contested seam in the revenue process. SDR performance is overwhelmingly determined by the lead supply upstream and the AE acceptance discipline downstream, not just by the SDR's individual effort.

What Sales Development Representative Means

A Sales Development Representative is an early-stage sales role focused on qualifying inbound leads and booking qualified meetings for account executives. SDRs follow up on inbound leads, assess fit and readiness against agreed criteria, and book qualified meetings for AEs. They are a key handoff point between marketing and sales, which is why clear definitions of a qualified lead and a tight service level agreement matter so much. Effective SDR teams protect AE time by filtering out poor-fit interest, which is the most expensive form of distraction in a sales org. The role is often confused with BDR: in many organizations SDRs handle inbound while BDRs handle outbound, though the titles are used interchangeably elsewhere.

How Sales Development Representative Works

A Sales Development Representative typically works in a CRM, a sales engagement platform for running outreach sequences, and lead scoring or routing tools that surface which inbound leads to prioritize. Contact data and call tools round out the stack. The aim is to qualify inbound interest quickly and consistently. Common performance metrics include qualified meetings booked, lead-to-opportunity conversion, and pipeline created, balanced against quality so SDRs are not just passing volume. Acceptance rate by AEs is the cleanest check on whether the meetings are genuinely qualified, and most mature programs include it as a primary metric alongside booking count. The most common career path is promotion to AE, where the rep moves from qualifying to closing.

Common Pitfalls and Misconceptions

A common point of confusion is the SDR versus BDR distinction. In many organizations SDRs handle inbound qualification while business development representatives focus on outbound prospecting, though the titles are used interchangeably elsewhere. What matters is that responsibilities, handoffs, and quotas are clearly defined for whichever structure a company uses; ambiguity here produces friction in every direction. Another pitfall is measuring SDRs only on booking volume without tracking AE acceptance rate, which incentivizes pushing marginal meetings into AE calendars and produces pipeline that quietly fails to convert.

Sales Development Representative in Practice

The practitioner reality is that Sales Development Representative performance is overwhelmingly determined by the lead supply and the AE acceptance discipline that sandwiches the role, not by the SDR's effort. SDRs given marketing-qualified leads from high-intent campaigns and AEs who accept and convert them produce high meeting volumes; SDRs given low-quality lists and AEs who reject most handoffs produce burnout and high turnover. Mature programs measure the system, not just the SDR, when meetings drop. The 12-to-24-month tenure window is also worth defending: less than 12 months rarely allows skill development, more than 24 months without promotion produces burnout and attrition.