PropTech & CRM Glossary/programmatic-adtech

What is Real-Time Bidding (RTB)?

Koray YalçınAugust 25, 2026

Definition Summary

RTB (Real-Time Bidding) is the protocol that lets ad inventory be bought and sold by auction within milliseconds, at the moment a user visits a web page. This advertising technology (AdTech) makes it possible to purchase the right ad placement through millisecond-level auctions based on audience data.

In-Depth Architectural Explanation

RTB is the most widely used real-time auction mechanism in programmatic ad buying and selling. When a visitor clicks through to a web page, the SSP sends out a bid request, DSPs submit their bids, and the winning ad is served.

Real Estate & High-Ticket B2B Application

In real estate projects, RTB prices ad placements in real time and serves them while high-budget prospective buyers browse web pages.

Practical Field Scenario & Workflow

Two different advertisers bid to reach an investor reading economic news. The banner of the luxury real estate brand that submits the highest bid is displayed.

Strategic Business Impact & ROI

RTB prices ad inventory according to the user's real-time value instead of a fixed rate, which improves spending efficiency.

Frequently Asked Questions

How many milliseconds does an RTB auction take to complete?

An RTB auction is completed in an average of 100 milliseconds (0.1 seconds).

Related Industry Concepts

What is an Ad Exchange?What is a Demand-Side Platform (DSP)?What is Programmatic Advertising?What is a Supply-Side Platform (SSP)?

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