---
title: Programmatic Fundamentals — RGM Training
url: https://realgrowthmatters.com/training/programmatic-ctv/programmatic-fundamentals/
updated: 2026-06-10
source_html: https://realgrowthmatters.com/training/programmatic-ctv/programmatic-fundamentals/
---

[Home](../../../index.html) › [Training](../../index.html) › [Programmatic / CTV](../index.html) › Programmatic Fundamentals

RGM° · Training

# Programmatic Fundamentals

Foundational ad tech. Ecosystem, DSPs, SSPs, auctions, identity, private vs open marketplaces.

### What you will learn

1. [Why programmatic is foundational ad tech](#why)
2. [The programmatic ecosystem](#ecosystem)
3. [DSP role](#dsps)
4. [SSP and exchange role](#ssps)
5. [Auction dynamics](#auction)
6. [Identity in programmatic](#id)
7. [Private vs open marketplaces](#private)
8. [Advanced playbook](#advanced)
9. [Common mistakes](#mistakes)
10. [Checklist](#checklist)

## Why programmatic matters

Programmatic is the underlying infrastructure for nearly all display, video, audio, and CTV advertising. Understanding it enables strategic decisions about DSPs, exchanges, identity, and measurement.

## Ecosystem

- **Advertisers** use DSPs to buy.
- **Publishers** use SSPs to sell.
- **Exchanges** mediate auctions.
- **Data providers** supply audience signals.
- **Verification** partners check brand safety.
- **Measurement** partners track performance.

## DSP role

- **Major DSPs:** The Trade Desk, DV360, Amazon DSP, Microsoft Invest (Xandr), Yahoo DSP.
- Buy across multiple exchanges and inventory sources.
- Audience targeting, bidding, optimization.
- Vary in fees, capabilities, transparency.

## SSP and exchange

- **Major SSPs:** Google Ad Manager, Magnite, PubMatic, OpenX.
- Publishers sell inventory via SSP.
- Exchange runs auction between bidders.
- Header bidding lets publishers run multiple SSPs simultaneously.

## Auction dynamics

- Most exchanges shifted to first-price (2019–2020).
- First-price means you pay exactly your bid.
- Bid shading services help (predict optimal lower bid).
- Auction floor prices set by publisher.
- Quality and brand-safety filters before auction.

## Identity in programmatic

- Third-party cookies degraded; deprecated on Chrome.
- Universal IDs: UID 2.0, ID5, LiveRamp RampID.
- First-party data activation via DSPs.
- Contextual targeting resurgent.
- Privacy Sandbox APIs forthcoming.

## Private vs open marketplaces

- **Open Exchange:** Public auction; broad inventory; lower quality control.
- **Private Marketplace (PMP):** Negotiated access to premium inventory.
- **Preferred Deal:** Fixed price, priority access.
- **Programmatic Guaranteed:** Fixed volume, fixed price.
- Premium brands lean PMP/PG; performance leans Open.

## Advanced playbook

- DSP selection rigorous: fees, transparency, capabilities.
- Bid shading for first-price exchanges.
- Quality scoring and filtering aggressive.
- Brand safety verification (DV, IAS, MOAT).
- Identity strategy beyond third-party cookies.
- First-party data activation.
- Quarterly DSP performance review.
- Annual vendor RFP if scale justifies.
- Supply path optimization.
- Cross-screen measurement strategy.

## Common mistakes

- DSP chosen by inertia, not capability fit.
- Open Exchange only; missing premium quality.
- First-price bidding without shading.
- Brand safety verification absent.
- Identity strategy still cookie-dependent.
- First-party data not activated.
- Supply chain opaque; agency markups invisible.
- Audience targeting without quality filtering.
- Measurement disconnected from buying.
- Annual review absent.

## Operating checklist

- DSP selected with rationale documented
- Bid shading for first-price exchanges
- Brand safety verification active
- Identity strategy beyond cookies
- First-party data activated
- PMP/PG strategy for premium
- Supply path transparency
- Quarterly DSP performance review
- Cross-screen measurement
- Annual vendor evaluation

## Sources and further reading

- The Trade Desk, DV360, Amazon DSP documentation
- IAB programmatic standards
- AdExchanger programmatic coverage
- Digiday programmatic research
- MarTech.org programmatic articles
- LUMA Partners landscape
- Scott Brinker ChiefMarTec
- Universal ID initiatives (UID 2.0, ID5)
- LiveRamp identity research
- RGM Attribution & Measurement post-ATT module
- RGM Retail Media off-site module
- IAS, DoubleVerify, MOAT brand safety

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Part of the [Programmatic / CTV](../index.html) series.