Can the API Manager be deployed on Stratos? Where is a how-to?
With the WSO2 Private PAAS 4.0.0 release you can use the WSO2 api manager with Stratos.
Please find the quick start guide. https://docs.wso2.com/display/PP400/Quick+Start+Guide
Once you are running the boot.sh to setup WSO2 Private PAAS , it is asking whether you want to deploy APIM (API Manager) service. Then you can enter the 'Y' and proceed with the WS02 api manager deployment.