You can route traffic through a network of servers distributed between an impressive number of countries. Should a server in another country be seized, the company uses RAM-only servers, which are wiped whenever the device is powered off. The service stores no traffic logs and collects very little info, none that could be used to identify users. Additionally, any foreign government requesting records from the company must petition the BVI High Court - a very laborious process.
Its headquarters are located in the British Virgin Islands, which lack data retention laws. This is the most important factor for most users, and ExpressVPN does not disappoint.
It is also available for Chromium-based browsers and Firefox.
The company offers apps for pretty much every platform out there, including Mac, Windows, Linux, iOS/iPadOS, Apple TV, Xbox, and Playstation. It certainly has a lot going for it, but it isn't perfect either. In the VPN world, ExpressVPN seems to have become one of the most trusted options, with many touting it as the best.