What of SEO in 2019?
There is a video made by Yoast, a well known and respected SEO company in Holland.
This is a brief synopsis of the details in the video.
Mobile friendly is the number one requirement with Google now. So your site needs to work and look good on mobile phones.
Have a fast, easily usable, technically flawless website with high quality content that helps visitors.
This website needs to be supported by a brand that offers high quality services and products.
Depending on your niche this might also mean that you need an app strategy or a strategy for an external platform.
Google is also getting more into how to integrate with voice searches.
Keyword research needs updating.
Reconsider keyword strategy.
What has changed in your company?
What has changed in and around your audience?
What has changed in peoples language?
What has changed where people search?
Content needs updating.
Re-assess the site structure.
Re-assess content and quality of most important pages.
Website might need updating.
Website should use schema easily.
Technical state of the site needs to be flawless.
Speed should improve.
The full video is here.