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Saniya Sood
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Published October 6, 2026 · Updated October 6, 2026
The answer: an SDR (sales development representative) and a BDR (business development representative) both create first meetings for account executives. In teams that use both titles, the usual split is that SDRs qualify inbound leads and BDRs prospect outbound into accounts that have not raised a hand. Many companies use the two titles for the same job, so always read the job description before the title.
Disclosure: Valley makes an outbound platform and competes for part of this budget. We have marked our own entry clearly, and every number below was read from the source named next to it on October 6, 2026.
Valley is an AI outbound platform that finds the people most likely to buy from you - from live buying signals, natural-language search, or your own lists - qualifies them against your ICP, researches each one, and sends personalized messages across email and LinkedIn that get 15-45% reply rates, against a category average of about 2%.
► Running outbound without a full SDR team? See what Valley finds in your market in 7 days
SDR | BDR | |
|---|---|---|
Stands for | Sales development representative | Business development representative |
Typical focus | Inbound: people who filled in a form, asked for a demo or started a trial | Outbound: target accounts that have not contacted you |
Main skill | Speed and qualification | Research and first contact |
Works from | Marketing's lead queue | A target account list and buying signals |
Usual measures | Speed to lead, leads qualified, meetings booked | Accounts opened, replies, meetings booked from cold |
Hands off to | Account executive | Account executive |
What is an SDR?
A sales development representative turns interest into a qualified meeting. A lead arrives from the website, a webinar or a trial; the SDR responds fast, checks the fit against the ideal customer profile, and books time with an account executive. The job rewards speed, because inbound interest goes cold quickly.
What is a BDR?
A business development representative creates interest where none has been expressed. The BDR chooses accounts that fit, finds the right people, works out a reason to write, and starts the conversation by LinkedIn, email or phone. The job rewards research, because a cold message with no reason behind it gets ignored.
How the two roles actually differ day to day
Where the lead comes from. SDRs start from a name that came to them. BDRs start from a blank list.
What a good day looks like. For an SDR, every inbound lead answered within minutes. For a BDR, a handful of well-researched first touches that get replies.
What the reply rate looks like. A cold message with no reason behind it rarely gets answered. Valley's own data shows the gap: signal-based messages get 15-45% reply rates against a category average of about 2%.
Who manages them. SDR teams often sit under marketing or sales operations; BDR teams usually sit under sales.
Which one should you hire first?
You already get steady inbound demand: hire an SDR. Unanswered inbound is the most expensive leak in a funnel.
You have little inbound and a clear target market: hire a BDR, or run outbound yourself first so you know what works before paying someone to repeat it.
You have fewer than a few dozen leads a month: one person can do both. Do not split the role until volume forces you to.
Keep exploring: what an AI SDR is, and what it costs.
The split is a convention, not a law. It stops helping when a small team spends more time arguing about who owns a lead than contacting it. Signs you should merge the roles: fewer than five people in sales development, the same person already answers inbound and prospects, or leads wait because they are in the wrong queue.
Where software fits. Tools sold as an AI SDR or AI BDR automate parts of both jobs: list building, research, first messages and follow-up. The labels are interchangeable. What matters is whether a person reviews what goes out.
Where Valley fits (our product, marked as promised). Valley does the BDR's groundwork: it finds the people most likely to buy from live buying signals, qualifies them against your ICP, researches each one and drafts a personalized message. A person reviews and approves before anything sends. Teams without a BDR use it in place of the first hire; teams with BDRs use it to give each rep more researched conversations. Plans start at $149 per seat per month billed quarterly ($199 monthly). Details: Valley pricing.
► Deciding between a hire and a tool? Book a demo and compare the math
FAQ
Is an SDR the same as a BDR? At many companies, yes. Where both titles exist, SDRs usually handle inbound leads and BDRs handle outbound prospecting.
What does BDR stand for in sales? Business development representative: a role focused on opening conversations with accounts that have not contacted you.
What does SDR stand for? Sales development representative: a role focused on qualifying leads and booking meetings for account executives.
Which role is more senior, SDR or BDR? Neither by definition. Some companies treat outbound as the harder job and promote SDRs into BDR roles; others do the reverse.
Do SDRs and BDRs close deals? Usually not. Both hand qualified meetings to an account executive, who runs the sale.
What is an AI BDR? Software that automates outbound prospecting work: finding accounts, researching people and sending first messages. It is the same product category as an AI SDR.
Can one person be both an SDR and a BDR? Yes, and in small teams one person should be. Split the roles when inbound volume is high enough that outbound stops getting done.
How this page was made: the facts were read from the sources named in the text on October 6, 2026; drafted with AI assistance; fact-checked, reviewed and edited by Saniya Sood.
