Twitter:
It is really difficult to get an audience to be a part of your webinar. You always need to look for a topic from your niche that is trending to be able to capture the attention of a large audience. Do some research and look for customer problems. Be relevant and informative with your webinar topic to encourage more people to attend your webinar.

To simply run a webinar, there are options available like GoToWebinar, GatherPlace, Freebinar, WebEx and many more. All you need to do is set a date for the webinar and send invitees a link to a sign-up page.
As soon as a person register for your webinar, send them a thank you mail and a confirmation mail. Sending this is not only good manners, but will also help get a confirmation from the registrant side.
LinkedIn:

The process of engaging your target audience has evolved very much with the advancement of technology and methods of promoting. Webinars are one of the most effective ways of engaging a target audience.
? Renew and improve webinar techniques:
Send reminder mails to registrants in order to remind them of the webinar. It will allow them to schedule their work accordingly and would help you get the maximum number of people for your webinar.
Guide and show attendees where they should click to earn benefits from the webinar. This will help bring more clicks to your landing page by appropriate CTA defining.
? Create an informational landing page:
? Allow time for Q&A:
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