What better way to add new features on a project already in production?

Question

We know that drupal is based on nodes.

I feel it difficult to make updates to a project already in production.

Currently I have two environments. A testing, and other production. I make changes in the test environment, then I redo the production environment.

Is there any way I can do packages with content types, views, and maybe even taxonomy nodes, and import them into production?

Thank you.