Original sentence: A user can switch to the old version of Google Maps, which is especially useful when Google Maps is more sluggish than usual.Google overhauled Google Maps in 2013.Originally, Google Maps used Adobe Flash for Street View.Street View is available as a component of Google Maps, as a web application, and as a mobile application for Android and iOS.The new Google Maps and Street View are slower than the old version.The newer version uses JavaScript extensively and has a JavaScript application programming interface
Edited sentence: It's possible to switch back to the old version of Google Maps and Street View temporarily.Like many Google web applications, Google Maps and Street View makes extensive use of JavaScript, and a rich JS API is available.Street View is available as a component of Google Maps as a web application, and as a mobile application for Android and iOS.This is useful when there are problems with the new version of Street View, that is slower than the previous one, as several sources explain as it happens with the whole Google Maps.Until 2013, with the introduction of the new Google Maps, the "Classic" version, as its now called, used Adobe Flash and had a Flash API, which is now deprecated