Extend and customise the WordPress REST API to your needs.
If you’re using Advanced Custom Field’s powerful Flexible Layout fields to create modular WordPress templates then you may find you need to include this content in the REST API output.
Amend the default posts endpoint of the WordPress API to allow a tax_query which will return posts tagged with a given term.
If you’re experiencing errors when attempting to access WordPress REST API endpoints between domains due to CORS policies, this code snippet will help.