Example: Say you’re a mobile game developer who’s about to launch a new app. You want as many users to install your app as possible for a target cost-per-install (CPI). Say you expect 1 out of 10 people who install your game to buy a $20 upgrade in the first 30 days. You can afford to pay up to $2 per install (or $20 ÷ 10 installs). Pick the campaign objective “Install volume” and set your target cost-per-install (CPI) to $2.
Example: After launching your game, you decide you’d like more users who are likely going to buy something, like a $20 upgrade you offer.
This doesn’t mean that you’d like to stop finding other types of users. You may still want to find people who will install and engage, but not necessarily pay. You create a separate campaign alongside your first one. You set this second campaign’s objective to be “In-app actions.” You calculate your target cost-per-action (CPA) of to be $20, equal to the value of the upgrade.
Then, you decrease the target CPI and lower the budget for the first campaign focused on “Install volume.” This signals to AdWords that you’re more interested in users who are likely to complete an in-app action.
Continuing the example: Say it’s been a couple of months and you’ve added a social feature and new levels to your game. You want to get this update to as many new users as you can.You adjust the target CPI and budget UP for the campaign that’s focused on “Install Volume.” At the same time, you adjust the budget DOWN for the campaign that’s focused on “In-app actions.” You’re signaling to AdWords yet another change in direction.
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