Cloud service for Django app deployment
The “easiest” approaches to deploying such app is probably using a Platform as a Service (PaaS). Here are some of them to get you started, pick any, really:


Python Anywhere (https://www.pythonanywhere.com/), focused on Python apps (hence Django as well)
Heroku (https://heroku.com/)
Clever-Cloud (https://www.clever-cloud.com/)
Google App Engine (https://cloud.google.com/appengine)
AWS ElasticBeanstalk (https://aws.amazon.com/fr/elasticbeanstalk/)
Azure AppServices (https://azure.microsoft.com/services/app-service/)
RedHat OpenShift (https://www.openshift.com/), open-source, available self-hosted or as a service


To me the first three are the easiest, but it all eventually boils down to personal preference.