SDRs vs. BDRs: Key Differences, Roles, and Outsourcing

October 1, 2025
5 minutes to read

In the world of sales, the terms SDR and BDR are often used interchangeably—but they actually play distinct roles that drive different parts of the revenue engine. Understanding the difference between SDR and BDR is crucial for building an efficient sales strategy. While both roles focus on creating pipeline and supporting Account Executives (AEs), they do so in unique ways. In this blog, we’ll explore SDR vs. BDR responsibilities, clarify the meaning behind each role, highlight how they complement each other, and explain why outsourcing SDR and BDR functions can give your business a competitive edge.

What Is an SDR (Sales Development Representative)?

A Sales Development Representative (SDR) is primarily responsible for qualifying inbound leads. When potential customers show interest—whether through downloading a white paper, filling out a form, or responding to marketing campaigns—SDRs are the first line of engagement. Their role is to determine whether the lead is sales-ready and worth passing on to Account Executives.

SDR Responsibilities

  • Responding to inbound leads promptly.
  • Qualifying prospects through discovery calls or emails.
  • Passing sales-ready leads to Account Executives (AEs).

In short, SDRs filter inbound opportunities to ensure the sales team spends time on high-value prospects.

What Is a BDR (Business Development Representative)?

A Business Development Representative (BDR), on the other hand, focuses on outbound prospecting. Instead of waiting for leads to come in, BDRs actively seek out new business opportunities by identifying, contacting, and nurturing cold prospects.

BDR Responsibilities:

  • Conducting cold outreach via emails, calls, and LinkedIn messages.
  • Identifying and generating new business opportunities in target markets.
  • Setting appointments for Account Executives (AEs).

BDRs are essential for expanding brand awareness and filling the sales pipeline with new leads who may not yet be familiar with the company.

SDR vs. BDR: Key Differences

Although SDR and BDR roles are complementary, they are not the same. If you’ve ever asked, “Is BDR and SDR the same?”—the answer is no. Below is a breakdown of their differences.

SDR BDR
Main Focus Inbound lead qualification Outbound prospecting
Lead Source Leads generated by marketing campaigns, referrals, or inbound inquiries Cold prospects identified through research and outreach
Primary Goal Determine if a lead is sales-ready and pass it to AEs Create new business opportunities and appointments for AEs
Outreach Type Responsive communication with interested prospects Proactive outreach through cold calls, emails, and social media
KPIs Number of qualified leads passed to AEs, conversion rate Number of new meetings booked, opportunities generated
Outsource Fit Ideal for companies with steady inbound lead flow Ideal for companies looking to expand market reach

 

When comparing SDR vs BDR or BDR vs SDR, the core difference lies in how each role approaches the sales pipeline—SDRs filter incoming interest, while BDRs generate interest from scratch.

How SDRs and BDRs Work Together

Even though their responsibilities differ, SDRs and BDRs share the same end goal: to create sales opportunities that lead to revenue growth. By working together, they ensure that both inbound and outbound channels are covered.

For example, SDRs may handle leads generated from a marketing campaign while BDRs simultaneously build awareness in untapped markets. This collaboration ensures the sales team has a constant flow of opportunities. The combination of inbound and outbound prospecting strengthens the sales pipeline and maximizes revenue potential.

Which Role, SDR or BDR, Should Your Business Prioritize?

Deciding whether to prioritize SDR or BDR depends on your company’s current stage and strategy. Here are some factors to consider:

  • Size of the Market: If you operate in a broad market, BDRs can help proactively reach prospects. If your market is niche with steady inbound leads, SDRs may suffice.
  • Company Maturity: Startups often lean on BDRs to create awareness, while established companies may rely more on SDRs to qualify the influx of leads.
  • Sales and Marketing Alignment: Businesses with strong marketing programs should use SDRs to filter inbound leads. Companies still building brand awareness will benefit more from BDRs.
  • Businesses with Inbound Leads: SDRs are best equipped to handle and qualify incoming interest.
  • Businesses Building Awareness: BDRs are crucial for outreach and brand exposure in new territories.

In many cases, companies benefit from having both roles in place to balance inbound and outbound sales efforts.

Common Challenges for SDRs and BDRs

Both SDRs and BDRs face challenges that require resilience and support. Common obstacles include:

  • Handling Rejection: Outbound calls often face rejection, and SDRs may encounter disinterested leads.
  • Keeping Motivation High: Repeated rejections or slow days can impact morale.
  • Coordinating with Sales Teams: Miscommunication between SDRs/BDRs and AEs can lead to lost opportunities or duplicated efforts.

Addressing these challenges with strong training, leadership, and clear processes is essential for maximizing the impact of these roles.

How to Hire and Train Successful SDRs and BDRs

Hiring the right SDRs and BDRs requires looking for specific traits and providing effective training. Successful candidates typically demonstrate:

  • Resilience and Persistence in handling rejection.
  • Excellent Verbal and Written Communication skills.
  • Curiosity and Willingness to Learn about products, markets, and prospects.
  • Time Management and Organizational Skills to handle large lead lists.
  • Tech-Savviness, including comfort with CRMs, sales automation, and digital tools.

Well-structured onboarding and ongoing coaching are key to turning raw talent into high-performing sales reps.

In-House Hiring Tips

Building an in-house SDR and BDR team gives companies control over hiring, training, and day-to-day operations.

Pros:

  • Full control over team structure and processes.
  • Close alignment with company culture and brand messaging.
  • Ability to customize roles for specific products or markets.

Cons:

  • High cost of salaries, benefits, and training.
  • Longer ramp-up time before the team becomes effective.
  • Increased management overhead.

While in-house teams offer more control, they require significant investment of time and resources.

Outsourcing SDR and BDR Teams

Outsourcing SDR and BDR functions can be a game-changer, especially for companies that need to scale quickly or lack internal resources.

Pros:

  • Speed to Market – Outsourced teams can launch quickly, sometimes within weeks.
  • Cost Efficiency – Reduce overhead by eliminating recruiting, training, and management expenses.
  • Scalability – Easily add or reduce headcount based on demand.
  • Expertise – Access specialized knowledge and proven sales processes.

Cons:

  • Less direct control over day-to-day operations.
  • Requires careful vendor selection to ensure cultural alignment.

For many businesses, the benefits of outsourcing outweigh the challenges, especially when working with a trusted provider like Sales Focus Inc. that offers both SDR and BDR outsourcing.

Final Thoughts

When it comes to sales SDR vs BDR, both roles are essential for building a healthy pipeline. SDRs qualify inbound interest, while BDRs generate new opportunities through outbound outreach. Together, they form the backbone of the sales development process.

Outsourcing SDR and BDR roles allows companies to accelerate growth, save costs, and focus internal resources on closing deals. Whether you’re wondering “What is SDR and BDR?”, “Is BDR and SDR the same?”, or “What is the difference between SDR and BDR?”—the answer lies in understanding their unique responsibilities and leveraging them strategically.

If you’re ready to scale your sales efforts with proven expertise, contact Sales Focus today to learn more about our SDR and BDR outsourcing solutions.

Frequently Asked Questions (FAQs)

Yes, but it depends on your business size and sales strategy. In smaller companies or startups, one person may handle both inbound qualification (SDR responsibilities) and outbound prospecting (BDR responsibilities). While this can be efficient early on, as a company grows it becomes more effective to separate the roles. Specialization allows SDRs to focus on converting inbound interest while BDRs dedicate time to creating new opportunities, which ultimately drives better results.

Both approaches have advantages. Building an in-house team gives you direct oversight, cultural alignment, and full control of daily operations. However, it requires significant investment in recruitment, training, and management. Outsourcing, on the other hand, provides speed to market, scalability, and cost savings by leveraging an experienced partner that already has trained SDRs and BDRs in place. For companies looking to grow quickly or expand into new markets, outsourcing often delivers faster ROI.

Neither role is inherently more important—the answer depends on your business model. If you have a steady flow of inbound leads from marketing campaigns, SDRs are critical to ensure those leads are qualified and ready for sales. If you are building brand awareness or entering new markets, BDRs are essential to proactively create opportunities. In many cases, businesses see the best results when SDRs and BDRs work together, balancing inbound and outbound efforts.

SDRs and BDRs are measured by slightly different metrics that reflect their unique responsibilities:

  • SDR Metrics:
  • BDR Metrics:
    • Number of outbound calls, emails, or touches made.
    • Meetings or appointments booked.
    • Opportunities created in the pipeline.
    • Response rate and engagement levels from cold outreach.

Both sets of metrics ultimately tie back to pipeline contribution and revenue growth, ensuring that SDRs and BDRs remain accountable to business outcomes.