With these platforms you can create short URLs and QR codes. Short URLs are easier for consumers to use and are also useful to measure downloads of a PDF or measure a click on a link, for example. Many of these types of platforms also provide QR code functionality and with that you can immediately make the use of a QR code measurable. This is a "piece" of tool that should not be missing in the toolbox of an e-commerce specialist.
TinyURL is one of the oldest short URL tools.
Rebrandly is a link management platform to burn, track and share short URLs using a custom domain name.
Bitly is the best known URL shortener for link shortening and click measurement.
Yourls is an open source PHP application that allows you to create short URLs.