What it means
An SDR (sales development representative) is a dedicated role responsible for outbound prospecting, MQL follow-up, and qualifying contacts into accepted sales opportunities. The role sits between marketing and sales; some companies title it BDR (business development representative) and the work is functionally identical.
SDR
BDR
Inbound SDR
Outbound SDR
An SDR team is a pipeline factory. A factory with no source-of-demand strategy produces parts that nobody wants to assemble.
Why it matters now
In the AI era, every prospect inbox is full of automated sequences. The SDR role is shifting from volume-of-touches to quality-of-message and judgement on which accounts to pursue. The teams that win compete on the precision of the account list and the relevance of the opening, not the number of emails sent per day.
| Old SDR model | Modern SDR model |
|---|---|
| 100+ touches per day | 30-40 deliberate touches, deeply researched |
| One sequence per persona | Account-specific opening; sequence adapts |
| Email + cold call only | Email + LinkedIn + warm intros via marketing |
| Quota: meetings booked | Quota: SQLs accepted, pipeline contribution |
100+ touches per day
- Modern SDR model
- 30-40 deliberate touches, deeply researched
One sequence per persona
- Modern SDR model
- Account-specific opening; sequence adapts
Email + cold call only
- Modern SDR model
- Email + LinkedIn + warm intros via marketing
Quota: meetings booked
- Modern SDR model
- Quota: SQLs accepted, pipeline contribution
How a senior operator uses it
A fractional CMO integrates the SDR motion into the marketing system rather than treating it as a separate function.
Co-own the target account list
Arm SDRs with content the buyer will actually open
Set conversion-grade quotas
Pick the right ratio
Common misconceptions
| Misconception | Better operator view |
|---|---|
| "SDR success is about activity." | Activity is a leading indicator; SQLs accepted and pipeline contribution are the measure. |
| "Marketing and SDRs are separate." | They share an account list and a target persona; if they do not, the funnel leaks at the handoff. |
| "AI replaces the SDR." | AI replaces the bottom 30% of an SDR's job (research, sequencing); the judgement and relationship work remains. |
"SDR success is about activity."
- Better operator view
- Activity is a leading indicator; SQLs accepted and pipeline contribution are the measure.
"Marketing and SDRs are separate."
- Better operator view
- They share an account list and a target persona; if they do not, the funnel leaks at the handoff.
"AI replaces the SDR."
- Better operator view
- AI replaces the bottom 30% of an SDR's job (research, sequencing); the judgement and relationship work remains.