In practice:<p>Developer: &quot;Well, we can either build our website in document mode or in application mode.&quot;<p>Management: &quot;What&#x27;s the difference?&quot;<p>Developer: &quot;If we build it in document mode, it loads quickly and cleanly and...&quot;<p>Management: &quot;Does document mode let us put the modal popover window that got 5% of our visitors to join our newsletter last month?&quot;<p>Developer: &quot;Well, nope.&quot;<p>Management: &quot;And the third party tracker?&quot;<p>Developer: &quot;Again, no.&quot;<p>Management: &quot;So we can&#x27;t monetize or track how many sticky eyeballs are consuming our content?&quot;<p>Developer: &quot;Nope.&quot;<p>Management: &quot;App mode it is.&quot;<p>Developer: &quot;But it isn&#x27;t an app. It&#x27;s just static pages.&quot;<p>Management: &quot;APP APP APP APP APP APP. I hear you can go on a course to build apps in less than a week.&quot;<p>Developer: <i>starts checking his LinkedIn for an employer who doesn&#x27;t make him want to take a pickaxe to his own face</i>