Update fields structure from local to production How can I change fields/sections structure locally while having a live site and then upload the new structure, without wiping the production site?
In Wordpress ACF you can just Sync the fields structure, here it seems I need to close down the website for development?!
There are lots of similar questions with good discussion on this:

What&#39;s the best practice for handling data migration and organization across development environments?

Recommended workflow when developing new websites

What&#39;s the best practice for upgrading a versioned Craft site?

Ultimately, we want to building something in core to help manage this and the upcoming Craft 3 has taken a step in that direction with Content Migrations.