Compatibility. Webenglish.se works well on any relatively modern device used in schools; PC, Mac, Tablets, Mobile phones, iPhones. It utilises Responsive Web Design methodology (an alternative explanation in Swedish available here). Internet browsers and plugin software (e.g. Adobe) to be used should be of the latest version. That is the golden rule of browser security, anyway.
Operational availability. The website server is located at a well-reputed cloud provider in Sweden, City Network. No 100% guarantee can be made on uptime. An aspiration is that planned disruptive operational changes are made after Teachers’ Office hours (06.00 – 23.00, Sunday thru Friday). Non-disruptive changes as updates of links and minor web design changes occur all the time. Considering the voluntary characteristics of support it may take some unpredicted time to restore the website in case of a total service disruption caused by external factors, e.g. failure of cloud provider services or Denial Of Service attacks.
Operational excellence. This free and voluntary sharing initiative depends on free or low-cost services for its performance. This does not exclude that utmost care has been taken to select services and software that deliver good user experience and security relative to cost, e.g. Pacethemes.com, WordPress.com and Cloudflare.com. User experience is tested at webpagetest.org.