&gt; That&#x27;s sort of insane. We aren&#x27;t talking about a static library here. Of all the public web APIs available in 2007, how many are still alive? Maybe 5%? Less? Google Maps is one of a tiny, tiny set of still-relevant products that still support their decade-old interface.<p>You never stated you were referring to ONLY public web apis. In fact you simply said &quot;Apps&quot;. But even if you really meant only public web apis there is precedent (Google&#x27;s many APIs) where APIs will continue years and sometimes even decades. Is it unlikely? Probably, depending on what you&#x27;re doing, but certainly not impossible nor &quot;insane&quot;.<p>As a software developer who&#x27;s seen web apps function for a decade + with little to no changes (one of which actually did rely on a third party API) I fail to see how anything I stated was &quot;insane&quot;. Not everything has to have major breakages every 6 months.