You save costs and text space. Some of your links probably do not fit into the address bar on even a PC or laptop screen. It is impossible to send these long links via SMS without paying for two or more message pieces.
You can also make room for your creative copy instead of links.
Short links support your brand. Personalized domains enhance your brand awareness. The CTR for branded hyperlinks is 34% higher than for unbranded ones. Stand out with hyperlinks built for your niche and brand.
The analytics are better. You get information on the geography of clicks, websites where the link was followed, and the level of link’s activity. You can then improve your strategy based on the campaign results.