Learn what an SDR does in sales, key responsibilities, SDR vs AE differences, essential skills, performance metrics, and hiring best practices.
08 May 2026
Lio
A sales development representative (SDR) handles the top of the funnel: prospecting, first contact, and lead qualification. Their job is to find potential buyers, determine whether those buyers are worth pursuing, and hand the qualified ones to an account executive (AE) who closes the deal. That handoff is the entire point of the role.
On a typical day, an SDR works through a mix of outbound calls, cold emails, and LinkedIn outreach. They research target accounts, write personalized first-touch messages, follow up on inbound form fills, and run discovery conversations to confirm fit. What is an SDR in sales? is a common search for a reason: the role looks like sales but stops short of selling.
The core SDR role responsibilities break into four areas:
Prospecting : Building lists of target accounts and contacts that match your ICP (ideal customer profile)
Outreach : Running multi-touch sequences across phone, email, and social
Qualification : Running discovery calls to confirm budget, authority, need, and timeline
Handoff : Booking the AE intro meeting and documenting context in the CRM
What SDRs do not do: negotiate pricing, manage existing accounts, or own revenue targets. That distinction matters. Understanding why most leads don't convert often comes down to blurred lines between prospecting and closing work.
When an account executive spends time prospecting, you lose on both ends: a qualified deal goes slower, and your top-of-funnel dries up. A dedicated SDR function fixes that split by keeping closers focused on closing.
The math is straightforward. SDRs run the lead qualification process before a deal ever touches an AE's calendar. They filter out poor-fit leads, confirm budget and authority, and pass only the conversations worth an AE's hour. Without that filter, your AEs either cherry-pick leads and miss volume, or work every lead and burn out.
Response speed compounds the problem. A prospect who fills out a form and hears nothing for 24 hours is largely gone. SDRs exist to close that gap, hitting inbound leads fast while running structured outbound sequences in parallel.
The pipeline metrics that matter all trace back to this function: meetings booked, qualified opportunities created, and SDR-to-AE conversion rate. If those numbers are weak, the issue is usually upstream, in how sdr in sales is structured, not in how your AEs close.
The three roles sit at different stages of the revenue cycle, and mixing them up is one of the most common reasons hiring decisions stall.
SDR | Account Executive (AE) | Account Manager (AM) | |
|---|---|---|---|
Primary focus | Prospecting and qualifying inbound or outbound leads | Closing qualified opportunities | Retaining and growing existing accounts |
Where they work | Top of funnel | Mid-to-bottom of funnel | Post-close |
Key output | Qualified meetings booked | Signed contracts | Renewals and expansion revenue |
Who they hand off to | Account executive | Account manager | Customer success or billing |
Typical KPIs | Meetings set, connect rate, pipeline sourced | Win rate, average deal size, quota attainment | Net revenue retention, upsell rate |
The sdr vs account executive distinction comes down to one word: closing. SDRs qualify; AEs close. An SDR who starts negotiating pricing is doing the AE's job, and an AE who spends mornings prospecting is doing the SDR's. Both situations cost you pipeline.
Account managers enter after the contract is signed. Their job is retention and expansion, not acquisition. Blurring that line with AE responsibilities is a separate problem, but it starts the same way: unclear role definitions at the point of hire.
If your lead qualification process is fuzzy, these role boundaries collapse fast regardless of what's on the job description.
Knowing what is SDR in sales is one thing. Knowing what separates a productive SDR from one who burns through activity without results is what actually helps you hire and train well.
Four SDR skills matter most:
SDRs who follow a script without adjusting to what the prospect actually says lose the conversation fast. Listening for pain signals, then responding to them, is what earns the next five minutes.
An SDR who passes every lead to an AE wastes everyone's time. The skill is knowing which signals indicate real fit and which don't, before the handoff happens.
Most prospects say no. SDRs who treat each no as data rather than failure maintain consistent output over weeks, not just days.
CRM hygiene, sequencing tools, and call notes aren't admin tasks. They're what makes pipeline metrics readable and patterns visible.
Most outreach happens over email and LinkedIn. Clarity and brevity in writing determine whether a prospect reads past the first line.
If lead conversion is already breaking down before the SDR even reaches out, skills alone won't fix it.
Split SDR metrics into two buckets: activity and outcome. Activity metrics tell you whether the work is happening. Outcome metrics tell you whether the work is producing results.
Activity benchmarks to set from day one:
Outbound touches per day: most teams target 40 to 60 combined calls and emails
Follow-up sequences completed: every prospect should receive at least 5 to 8 touches before being marked inactive
Response rate on email: below 5% is a signal to audit copy or targeting, not just volume
Outcome benchmarks that reflect real SDR performance:
Meetings booked per month: according to Crunchbase research, the average SDR delivers around 15 sales-accepted leads per month, with a 20% drop-out rate built in
Meeting-to-opportunity conversion: track what percentage of booked meetings actually advance to a qualified pipeline stage
Pipeline contribution: tie each SDR to a dollar value of pipeline generated, not just meeting count
Two ratios matter most for spotting underperformance early. First, the activity-to-meeting ratio: if an SDR is hitting touch targets but booking no meetings, the problem is messaging or ICP fit. Second, the meeting-to-opportunity ratio: if meetings are booked but none convert, the handoff process is likely broken.
Review these numbers weekly for the first 90 days. Most SDR performance problems are visible in the data two to three weeks before a manager notices them in conversation. Catching them early is the difference between coaching and churning.
Setting up an SDR well takes more than handing someone a phone and a list. The sequence below gives you a concrete setup path, covering sdr role responsibilities from day one through the first qualified handoff.
Write down the firmographic and behavioral criteria that describe your best-fit customers: company size, industry, tech stack, buying trigger. Your SDR cannot run a consistent lead qualification process without this on paper.
Inbound SDRs respond to demo requests and content leads. Outbound SDRs prospect cold. The workflows, tooling, and daily activity targets differ enough that mixing both without clear rules creates confusion. Pick a primary motion first, then layer in the secondary one once the rep is ramped.
Define what a Sales Qualified Lead (SQL) looks like using a framework like BANT (Budget, Authority, Need, Timeline) or MEDDIC. Write it down as a checklist, not a feeling. If two people on your team would score the same lead differently, the criteria aren't tight enough.
Slow lead intake is the bottleneck most managers miss. If leads are sitting in a form submission spreadsheet or arriving through a manual Slack ping, your SDR is wasting time on data entry instead of conversations. Automate the intake step. Most lead conversion problems trace back to this gap, not to the SDR's pitch.
Daily call and email volumes should be set before the rep makes their first contact. These numbers anchor your pipeline health reviews and give you a baseline to diagnose performance dips later.
Define what triggers a handoff, who owns the calendar invite, what context transfers in writing, and what happens if the AE doesn't follow up within 24 hours. A handoff without written criteria is just a warm introduction that often goes nowhere.
Compare actual activity and conversion rates to the targets you set in step five. If the gap is large, the problem is usually in steps one through four, not rep effort. An automated intake system often closes that gap faster than additional coaching.
The sdr in sales setup that works is the one where every step is documented before the rep touches a lead.
Three failure points show up in almost every broken SDR setup.
Slow lead intake is the first. When a prospect fills out a form or clicks an ad, they're warm for a short window. Manual routing, spreadsheet queues, or a CRM assignment rule that fires once a day kills that window. The cost of delayed follow-up compounds fast — most teams don't realize it until pipeline numbers slip.
Vague qualification criteria is the second. Without documented lead qualification process standards, every SDR applies a different bar. One rep books anyone with a pulse; another disqualifies too aggressively. Neither produces consistent sdr metrics and goals you can actually forecast from.
No handoff definition is the third. "Sales-ready" means nothing without a written threshold: company size, budget signal, timeline, and confirmed pain. Without it, AEs receive half-qualified leads and conversion rates drop below any useful benchmark.
Audit your process against all three before adding headcount.
An SDR only performs when the lead intake and qualification layer underneath the role is solid. Without clean, routed leads arriving at the right time, even your best SDRs waste cycles chasing dead ends instead of running conversations that move deals forward.
Lio handles that layer automatically—routing inbound leads, qualifying them against your ICP, and surfacing only the conversations worth an SDR's time. The result: your SDRs spend their energy on what they're actually good at: discovery and qualification. Ready to see how it works? Start a free trial of Lio or book a product walkthrough to see the lead intake layer in action.
Q. What does an SDR do in sales?
A. SDRs handle prospecting, outreach, qualification, and handoff to account executives. They find potential buyers, determine fit, and book qualified meetings—stopping short of closing deals themselves.
Q. How does an SDR differ from an account manager?
A. SDRs acquire new customers by qualifying leads; account managers retain and grow existing customers post-close. Mixing these roles collapses pipeline and retention focus simultaneously.
Q. What are the key skills required for an SDR role?
A. Active listening, qualification discipline, resilience to rejection, CRM fluency, and written communication clarity. These separate consistent performers from those burning through activity without results.
Q. What are the typical goals and metrics for an SDR in sales?
A. Target 40–60 touches per day, 15 meetings booked monthly, and track meeting-to-opportunity conversion. Review activity and outcome metrics weekly to spot underperformance early.
Q. How can I become a successful SDR in sales?
A. Master active listening and qualification discipline, maintain tool hygiene in your CRM, and treat rejection as data. Success comes from consistent execution against activity targets while filtering rigorously for real fit.
Q. When should a company hire its first SDR?
A. When your AEs spend more than 20% of time prospecting instead of closing, or when inbound leads aren't being responded to within 24 hours. A dedicated SDR function frees closers to close.
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