title: Telegram different between getUpdates and Webhooks
body: <p>id like to start using telegram bot, i already read the documentation, but still can't get my head, what's the difference between "getUpdates" and "webhooks" 
  source: <a href="https://core.telegram.org/bots/" rel="nofollow noreferrer">telegram docs</a></p>
  
  <p>can someone explain this in plain language
  thanks in advance</p>