Glossary

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Glossary / Evaluation and implementation guide

Demand-Side Platform (DSP)

A Demand-Side Platform (DSP) is software that lets advertisers buy programmatic ad inventory across many exchanges and publishers from one interface, handling bidding, targeting, frequency management, and reporting.

It sits on the buyer's side of the auction, in contrast to supply-side platforms, which represent publishers selling inventory.

A practical example

Example: a mid-size B2B marketer uses a DSP to run display and video campaigns against a target account list across multiple sites simultaneously, setting one frequency cap across all of them rather than managing each publisher separately.

What to evaluate before investing

  • Ask about the full fee structure: platform fees, data fees, and media margins, since these are often layered and hard to compare.
  • Check whether the DSP supports the ad formats and regions you need, including connected TV or audio if relevant.
  • Evaluate how CRM or account lists are onboarded and matched, and what match rates are typical for B2B data.

Limitations and tradeoffs

DSPs add genuine scale but also complexity: they require media-buying expertise, minimum spend commitments are common, and for small budgets a platform-native tool or managed service may be more cost-effective than self-managing a DSP.

Plan your next step with MeshLine

Connect this decision to your automation, organic marketing and customer lifecycle management. In a MeshLine demo, discuss your existing tools, the scope you need and how to measure the result.