There are many strategies you can follow to generate leads with a webinar:
An on-demand presentation is a pre-recorded webinar which can be viewed by your audience any time they'd like. Unlike webinars, on-demand presentations do not require a large number of internal links.
If there is no need for a live event, you can use on-demand presentations for various big webinar concerns. One of the advantages is that it provides ease of content creation for subject matter experts, becaues they can record their portion online video at their convenience.
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.