---
title: Glossary
description: Common terms used across TapMind SDK Integration and mediation.
---

> **For AI agents:** the complete documentation index is at [llms.txt](/llms.txt). Append `.md` to any page URL for its markdown version.

Short reference for terms you will see when integrating TapMind with mediation networks and ad placements.

## Adapter

A network-specific bridge that translates TapMind mediation calls into the target SDK’s APIs so demand can be requested and rendered through a shared interface.

## Mediation

The process of routing ad requests across multiple demand sources—often in a waterfall or bidding setup—to maximize fill and revenue for a given placement.

## Placement

A named inventory slot in your app (for example rewarded video or banner) where ads can be requested, shown, and measured.

## Waterfall

An ordered list of demand sources tried one after another until an ad fills or the list is exhausted. Higher-priority or higher-ecpm sources are typically tried first.

## eCPM

Effective cost per mille—estimated revenue per thousand impressions. Used to rank demand sources and compare monetization performance across networks.

## GMA SDK

Google Mobile Ads SDK. The Google Play services ads library used to load and display Google (and often mediated) ads on Android and iOS.

## Network Key

A credential or identifier issued by an ad network that your adapter uses to authenticate requests and map traffic to the correct account or app.

## Fill Rate

The share of ad requests that successfully return a fill, usually expressed as filled requests divided by total requests for a placement or network.