Recommended way to embed PDF in HTML?

Question

What is the recommended way to embed PDF in HTML?

• iFrame?
• Object?
• Embed?

What does Adobe say itself about it?

In my

Answer 1

This is quick, easy, to the point and doesn't require any third-party script:

UPDATE (1/2018):

The Chrome browser on Android no longer supports PDF embeds. You can get around this by using the Google Drive PDF viewer