What is an SDR? Building an in-house team vs outsourcing

An SDR (sales development representative) makes first contact with prospects, assesses whether they are a good fit and books meetings with the sales team for those who are. They run the very start of the sales process, from "nobody knows us" to "there's an opportunity on the table".

As B2B companies grow, they treat this as a separate specialism, because finding new customers and closing deals require different skills. This guide explains what an SDR does and whether to run this work in-house or outsource it.

What does an SDR do?

• Research: studies target companies and decision makers and finds the right reason to reach out.
• Outreach: makes first contact by email, LinkedIn and phone, and follows up.
• Reply handling: responds quickly to replies, answers questions and handles objections.
• Qualification: assesses whether the person and company fit on need, budget, authority and timing.
• Booking and handover: schedules meetings between good-fit buyers and the sales team and passes on context.
• Logging and reporting: records every touch in the CRM and reports on what is and isn't working.

SDR, BDR and AE: who does what?

Role	Main job	Measured by
SDR	First contact, qualification, booking meetings	Qualified meetings and opportunities
BDR	Reaching new accounts through outbound	Opportunities from new accounts
AE (Account Executive)	Demo, proposal, negotiation and closing	Closed deals and revenue

Titles vary between companies. What matters is that the work of creating new opportunities and the work of closing them are clearly defined.

Option 1: build your own SDR team

Pros

• Product and company knowledge: the team learns your product deeply and carries your culture.
• Full control: you manage the message, process and priorities directly.
• Long-term learning: what is learned stays in the company, and reps can grow into AE roles.

Cons

• Time: hiring, training and ramping up can take months.
• Hidden costs: beyond salary, there are data and communication tools, management time, training and the cost of high turnover.
• Extra difficulty abroad: finding reps who know the target market's language, business culture and legal rules is hard, and hiring abroad brings its own legal and administrative load.
• Needs management: SDR teams need regular coaching, message testing and process management. Without an experienced manager, the team can underperform.

Option 2: outsourced SDR services

Pros

• Speed: outreach starts within weeks, with no hiring or training.
• Ready process and tools: list building, sending infrastructure, sequences and reporting are in place.
• Market expertise: a good provider knows the target market's language, channel mix and legal rules.
• Flexibility: start short and scale up or stop based on results.

Cons

• Product knowledge can be limited: the provider needs a good onboarding and regular feedback to learn your product.
• Quality varies widely: some providers optimise for volume; a calendar full of poor-fit buyers is a real cost.
• Learning can stay outside: if reporting is weak and data isn't handed over, knowledge doesn't build up in your company.

Which is right, and when?

A simple rule: if the market and process are uncertain, outsource; once both are proven, build your own team.

• Outsourcing makes sense when you're testing a new market, don't yet know which segment and message work, find it hard to hire someone who knows the target market's language and rules, or want to see results quickly.
• An in-house team makes sense when the market is validated, the winning segment and message are known, you have an experienced leader to run the team and you want a permanent structure for long-term growth.

Many companies use both in sequence: they test the market and refine the process with an outsourced team, then transfer what they've learned to their own team.

Choosing an outsourced SDR provider

• Agree meeting qualification criteria together and in writing.
• Ask for messages to be approved by you before sending.
• Ask for weekly, detailed reporting: who was reached, who replied, which message changed and why?
• Make clear in the contract that the data is yours and will be moved into your CRM.
• Start with a short initial period rather than a long-term commitment.
• Ask who will manage your account.

ArgonOut works as an outsourced sales development team for SaaS companies expanding abroad: the founders run strategy and outreach, we take the first call ourselves and only hand over opportunities whose fit is confirmed. We don't ask for long-term contracts; we start with a four-week sprint and continue monthly based on results. See Programs and first call and handover. How to compare appointment setting services is covered in what is appointment setting.

Frequently asked questions

What is the difference between an SDR and a BDR?

The titles are used differently from company to company. Commonly, an SDR qualifies inbound or outbound prospects and books meetings, while a BDR focuses on outbound to reach new accounts. In practice, many companies also call their outbound reps SDRs.

What is the difference between an SDR and an Account Executive (AE)?

The SDR works at the start of the sales process: making first contact, qualifying and booking meetings. The AE takes those meetings over, runs demos, makes proposals and closes the deal. SDR success is usually measured by qualified meetings and opportunities, AE success by closed revenue.

For a new international market, should I hire SDRs or outsource?

If the market isn't validated yet, outsourcing is usually less risky and faster: you can test the market without hiring time, local language and legal knowledge, tool set-up and management overhead. Once the market is validated and the process works, building your own team can make more sense.

Who should own the data in an outsourced SDR engagement?

You should. Target lists, conversations, call notes and opportunities should flow into your CRM and stay with you when the engagement ends. This should be stated clearly in the contract.

Related guides

• What is appointment setting? A guide for B2B companies
• What is outbound sales? How it differs from inbound and how it works in B2B
• What is an ICP (ideal customer profile) and how do you define one?

This guide is for general information. If you'd like to talk through a plan for your target market, book a free 30-minute strategy call.