I too have this question, as I notice there are docker containers for both the pdfviewer-server and word-processor-server (https://hub.docker.com/u/syncfusion). I would also extend this to even the Spreadsheet Viewer, where we need the "openUrl" specified to open up XLSX files.
I notice your one code example here - https://stackblitz.com/edit/react-lqlxja-bjseyo?file=index.js is throwing the following error: "Web-service is not listening. PDF Viewer depends on web-service for all it's features. Please start the web service to continue."
Is this an issue with the example or the serviceURL as it looks to be the same in other examples.
Would appreciate any information about using the web services hosted by Syncfusion, and if there are any restrictions, and what is being done to ensure these services are highly available. Thanks!