Look at Hosting your bot if you've decided to get a server.

The linked articles/blog posts on how to use PTB with the different providers are

• usually written for a specific (range of) versions of python-telegram-bot and may not be compatible with the version that you are using
• not written or maintained by the PTB dev team.

When in doubt, please check the official PTB resources.

• Amazon Web Services
  • Running a Python Telegram Bot on AWS Serverless (Lambda) for PTB v13.x
  • Running a Python Telegram Bot on AWS Serverless (Lambda) for PTB v20.x
• Microsoft Azure
• Google App Engine
  • Notes about GAE - Google App Engine
  • How to create a Bot on Google App Engine by sooyhwang (NOTE: This might be obsolete)
• Google Cloud Functions
  • Building a serverless Telegram bot by pabluk
• Google Cloud Run
  • Hosting Telegram bots on Cloud Run for free by skhaz
• Back4App
• Heroku
  • Heroku getting started with Python
  • Webhooks on Heroku
  • Skeleton repository
• Code Capsules
  • Host a Telegram Bot on Code Capsules
• OpenShift
  • How to run a Bot on Openshift v2
  • How to run a Bot on Openshift v3
• Fly.io
  • How to deploy a Telegram bot to Fly.io (written for v20.0a2)
• Joyent Triton
• Vercel serverless functions
• PythonAnywhere
• Oracle Cloud an AlwaysFree feature for a decent instance.

• DigitalOcean
• Linode
• RamNode
• Scaleway
• RunAbove
• sabahost
• Netcup
• Hetzner
• Vultr

• OVH
• Uberspace

• Codenvy
  • How to create a Bot on Codenvy by p92camcj
• Koding
• Cloud9
• Replit
• Glitch

• localtunnel
• ngrok

• Banana Pi
• Raspberry Pi