What are some alternatives?
When comparing Lightstreamer and Microsoft Azure, you can also consider the following products
Socket.io - Realtime application framework (Node.JS server)
DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.
Heroku - Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
AWS - Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. Free to join, pay only for what you use.