What is an SDR?

SDR stands for Sales Development Representative. It is the role responsible for prospecting, outreach, and booking qualified meetings — the top of the sales funnel. SDRs do not close deals. They open conversations and generate pipeline for Account Executives to close.

Cameron Evans · Founder & CEO, Haku

1 May 2026 · 5 min read

The SDR role emerged in the early 2010s, pioneered by Aaron Ross at Salesforce whose Predictable Revenue framework separated the prospecting function from the closing function. The argument was simple: a great closer should spend their day closing, not prospecting. A dedicated SDR role generates pipeline at volume, so the AE can focus entirely on converting it.

That logic still holds. What has changed dramatically is the infrastructure an SDR needs to be effective — and the proportion of their day they spend actually selling versus doing research, list building, and data validation.

What an SDR actually does day-to-day

SDR performance benchmarks in 2026

SDR vs BDR vs AE — the differences

SDR (Sales Development Representative) — top-of-funnel outbound. Prospects, reaches out, qualifies, books meetings. Does not close.

BDR (Business Development Representative) — used interchangeably with SDR at most companies. When distinguished, BDRs typically focus on larger or more strategic accounts, or on inbound leads rather than purely outbound prospecting.

AE (Account Executive) — runs the meetings the SDR books, manages the full sales cycle from discovery to close. Senior to the SDR, typically with a closing quota rather than a meeting-booking quota.

The standard career path in B2B sales: SDR for 12 to 24 months → promoted to AE → potentially to Senior AE, Sales Manager, or VP Sales depending on skills and company trajectory.

What makes a great SDR in 2026

The skills that made a great SDR in 2020 — high call volume, persistence, product knowledge — are necessary but no longer sufficient. The SDRs producing the best results in 2026 have three additional capabilities: they understand which signals indicate a buying window and use them to trigger outreach rather than working arbitrary lists; they can write emails that open with something specific and verifiable about the prospect's current situation; and they manage their time aggressively to protect the proportion of the day spent in actual conversations.

The biggest shift: the best SDRs in 2026 treat research as something to eliminate from their workflow rather than something to do better. The research should be automated. The SDR's job is conversations.

How the SDR role is changing

AI has not eliminated the SDR role. It has eliminated the parts of the SDR role that did not require a human — research, list building, data validation, CRM updates, email drafting from scratch. The SDRs who are thriving in 2026 are the ones who recognised this shift and responded by using AI tools to remove those tasks from their day — and spending the recovered time in conversations that do require a human: discovery, objection handling, relationship building, and the judgment call of when to push and when to pull back.

The SDR role is not going away. It is concentrating into its highest-value activities — the conversations — while the administrative scaffolding that used to surround it gets automated out of existence.