A panel such as Plesk, DirectAdmin or cPanel allows you to manage basic aspects of your site without using a terminal.

Global DNS networks usually take advantage of anycast routing and global PoPs to speed up DNS resolution and your site.

Managed infrastructure meansn you don't have to worry about the physical hardware - power, network, hardware components.

WordPress support gives you access to experience WordPress experts that can help with troubleshooting broken/non-functional aspects of your WP site.

Page rules allow for granularized control of your caching/firewall and filter by headers/URL. This can also be done via .htaccess but it is not as effective.

Access delegation allows the assigning of certain privileges to another user.

Resources are required for running the scripts necessary to generate your site. For VPS/Dedicated servers, this is dependent on what specs you purchase.

Zero contention means you don't have to compete for CPU/DB time with other sites or processes assuming reasonable usage.

Caching stores static versions of your site to serve to visitors, speeding it up drastically.

SmartPurge refers to the automated purging of modified pages from the cache. (and preloading those pages in our case)

Edge cache caches your site at a CDN level, providing massive scalability and performance gains.

Monthly visitors are highly dependent on the type of site and configuration. Estimates represent a maximum in ideal conditions.

Concurrency refers to the number of requests/users that can be served at once. This is also dependent on the site and configuration.

A WAF blocks attacks (XSS / SQLi / RFi / etc) against your WordPress site. Anomaly detection finds unexpected surges in traffic/requests and routes them for further verification.

As long as basic security measure are deployed and adhered to (ie, strong passwords) - this service will fix your site for free if it's hacked.