SDR vs AE— what’s the difference?

TL;DR

• SDR (Sales Development Rep): top-of-funnel. Cold outbound, qualifying inbound, booking discovery meetings. Does not close deals.
• AE (Account Executive): closes deals. Runs discovery, demo, negotiation, contract. Pipeline comes from SDRs, marketing, or self-sourced.
• OTE ranges (2026, US): SDR $70-110K. AE $150-400K+ depending on segment.
• Hire AE first. For most early-stage startups, the first sales hire is a full-cycle AE who self-prospects. SDRs come later, once the motion is repeatable.
• SDR:AE ratio at scale: typically 1:1 (one SDR per AE) for mid-market. 2:1 or 3:1 for enterprise. 0.5:1 or no SDRs for SMB.
• Full-cycle AE = SDR work + AE work in one person. Standard at startups under $5-10M ARR.

What an SDR actually does

An SDR (also called BDR — Business Development Rep — in some orgs) owns top-of-funnel pipeline generation. The role is structured around three primary activities:

• Cold outbound: emailing, LinkedIn messaging, cold-calling target prospects to book discovery meetings. Most SDRs send 30-60 cold emails per day and make 30-80 calls per day.
• Inbound qualifying: when marketing-sourced leads come in (form fills, content downloads), the SDR qualifies them and books a meeting with an AE if they’re fit.
• Meeting booking: the SDR’s primary deliverable is qualified meetings on AE calendars. SDR comp is typically structured around meetings booked and/or pipeline generated.

What an SDR does NOT do: run discovery calls, demo the product, negotiate pricing, or sign contracts. The SDR’s deliverable ends at “qualified meeting on AE calendar.”

SDR is typically an early-career role (0-2 years experience). The path is SDR → AE within 12-24 months at most orgs. SDR is also a high-burnout role; tenure averages 12-18 months before promotion or exit.

What an AE actually does

An AE (Account Executive) closes deals. Once a qualified meeting is on the calendar, the AE owns the deal end-to-end:

• Discovery call: qualifies the prospect, understands the use case, identifies stakeholders. (See discovery call architecture.)
• Demo / evaluation: runs structured demo, often with multiple stakeholders. May run a POC or trial.
• Multi-thread: engages additional stakeholders at the buyer side — economic buyer, technical evaluator, champion. (See multi-thread strategy.)
• Negotiation: pricing, terms, contract redlines.
• Close: gets the deal signed.

The AE’s deliverable is closed-won revenue. Comp is structured around bookings or revenue — quota carry — and the OTE math is determined by the segment they sell into. (See AE compensation.)

A “full-cycle AE” is an AE who also handles the SDR’s job — self-sources pipeline through cold outbound. This is the standard model at early-stage startups where there’s no SDR team yet.

OTE and comp ranges

The SDR-to-AE pay gap is roughly 2-3× at the mid-market segment and 3-4× at enterprise. This pay gap exists because the AE owns the deal that produces revenue; the SDR’s contribution, while important, is one input among several.

The SDR:AE ratio at scale

Once a sales org has both SDRs and AEs, the ratio determines how much pipeline an AE has to work with. Standard ratios by segment:

• SMB: 0.5:1 to 1:1 (one SDR per 1-2 AEs). SMB sales are high-velocity and the AE often self-sources the pipeline more than the SDR feeds it.
• Mid-market: 1:1 (one SDR per AE). The standard ratio. Each AE has a dedicated SDR producing pipeline.
• Enterprise: 2:1 to 3:1 (multiple SDRs per AE). Enterprise AEs work fewer, larger deals and need more pipeline coverage to find the right targets.
• Strategic / named-account: 2:1 to 4:1. Named-account AEs work specific target lists; SDRs do the multi-stakeholder reach into each account.

A ratio of 1:1 produces roughly 8-15 qualified meetings per AE per month from SDR work, plus whatever the AE self-sources or marketing produces. The right ratio depends on what fraction of pipeline you expect each source to produce.

When to hire which first

For early-stage founders, the question is rarely “SDR or AE.” The right answer is almost always “full-cycle AE first.”

The reasoning:

• An SDR without an AE has no one to hand meetings to. The founder is the AE in that case, which means the founder has to take every booked meeting — defeating the purpose of hiring the SDR.
• An SDR without a proven motion produces low-quality pipeline. Until the founder has personally run 30-50 cold-sourced deals and knows what a real qualified meeting looks like, the SDR will book meetings that turn out to be unqualified, and the founder won’t know how to coach them.
• A full-cycle AE produces revenue immediately. A full-cycle AE self-sources their own pipeline and closes their own deals. They produce closed-won revenue from day 90+. An SDR alone produces zero revenue — they produce meetings that someone else has to close.

The hiring sequence that works at most B2B SaaS startups:

1. Founder-led sales (first 10-30 customers). The founder personally does cold outbound, runs discovery, demos, and closes.
2. First full-cycle AE (typically at $500K-$1.5M ARR). Hire someone who can both prospect and close. (See the first AE transition.)
3. Second and third full-cycle AEs. Replicate what worked.
4. First SDR (typically at $3-5M ARR). Now there’s a proven motion, qualified pipeline definition, and AE capacity to handle hand-offs.
5. Specialization split: AEs stop self-prospecting, SDRs feed them pipeline. The org has structure.

The mistake most founders make: hiring an SDR at $500K ARR because “the founder is too busy to do cold outbound.” This usually produces a 3-6 month detour where the SDR books meetings that the founder has to take anyway, both parties are frustrated, and the SDR churns out without producing meaningful revenue.

When an SDR DOES come first

There are narrow cases where hiring an SDR before an AE makes sense:

• Founder is a strong closer but hates prospecting. If the founder can close 25-35% of meetings but won’t reliably do cold outbound, an SDR-with-founder-as-closer pairing can work. The founder must commit to taking the meetings.
• Pure inbound motion. If marketing produces enough qualified leads that the AE work is mostly closing pre-qualified inbound, an SDR is sometimes the right hire to qualify inbound and free the AE to focus on closing.
• Existing AE team needs more pipeline. If you already have AEs at quota saturation and the bottleneck is pipeline, add an SDR. This is a later-stage problem.

The AE-self-prospecting argument

Even at larger orgs, many sales leaders argue that AEs should always self-prospect for some portion of their pipeline. The reasoning:

• AEs who self-prospect understand their ICP and territory better than AEs who only work fed pipeline.
• SDR-sourced meetings have lower close rates (typically 15-25%) than AE-sourced meetings (25-40%) because SDRs are incentivized on meeting volume, not deal close.
• AEs who can’t self-prospect become dependent on the SDR funnel. When SDRs are slow or marketing is dry, AE production collapses.

The common compromise: AEs are expected to self-source 25-40% of their pipeline even when SDRs are part of the team. The SDR feeds the rest. This produces AEs who maintain prospecting skill and aren’t fully dependent on someone else’s output.

SDR comp structure

SDR comp is usually 60/40 or 70/30 base/variable, with the variable tied to meetings booked, pipeline generated, or both. Common structures:

• Meetings booked + held: $50-200 per qualified meeting booked, $100-400 per meeting actually held by an AE. Held meetings count more because no-shows are easy to game.
• Pipeline generated: a percentage (typically 0.5-1.5%) of pipeline created from SDR-sourced meetings. Better aligned with downstream value, harder to attribute cleanly.
• Hybrid: base variable on meetings held, with an accelerator or bonus on pipeline generated or deals closed from the SDR’s pipeline.

The risk with meetings-only comp: SDRs book unqualified meetings to hit number. The risk with pipeline-only comp: SDR comp depends on AE work, which they don’t control. Hybrid plans are the common compromise.

Common SDR/AE setup mistakes

• Hiring SDR before AE. Covered above. The default mistake.
• SDR comp on meetings booked alone. SDRs game the number with low-quality meetings. Pair with held-meeting and/or pipeline-generated metrics.
• No qualification criteria for SDR meetings. AE rejects 60-80% of SDR-sourced meetings as unqualified. Define what “qualified” means in writing.
• SDR career path unclear. SDRs accept the role expecting AE promotion in 12-18 months. If the path isn’t real, retention collapses.
• Splitting an AE off prospecting too early. AE stops self-sourcing because SDRs feed them. SDRs underdeliver. AE pipeline collapses. AE blames SDRs. Org churns.
• Treating SDRs as cheaper AEs. SDRs are not junior AEs. The skill sets overlap but the role is genuinely different. Asking an SDR to close a deal sets them up to fail.

Where this fits

The SDR vs AE distinction is foundational to sales org design. The hiring sequence — founder → full-cycle AE → SDR — is covered in more depth in the first AE transition, and the comp structures for both roles are detailed in AE compensation. The honest summary for early-stage founders: don’t hire an SDR first. Hire a full-cycle AE, replicate what works, and add SDRs later when there’s a real motion to feed.