Podia’s alternative page SEO strategy is legendary.
Thank you! 
What SEO strategies have been most effective for your companies?
Alternative pages by far as you mentioned above.
For alternative pages, how do you manage competitors complaining about what is listed on their page?
We’ve never heard any complaints from competitors. We make sure to keep our podia alternative pages informationally accurate. We never lie.
What is your Google Ad strategy? Ie - target competitor keywords with link to your alternative page on them?
That’s not our entire strategy, but we do some competitor targeting as warranted. We use a third party agency to handle our Google Ad strategy, though. We just give them benchmarks, budget, and creative and they do the rest.
Any additional SEO strategies like alternative pages that are big wins for your companies?
Alternative pages are 
but having an SEO-driven blog is equally as important. To make that work, though, you need to have really talented writers who can write interesting articles that tie back to keywords.