The availability of a website is measured by the percentage of a year in which the website is publicly accessible and reachable via the Internet. This is different from measuring the uptime of a system. Uptime refers to the system itself being online. Uptime does not take into account being able to reach it as in the event of a network outage. A hosting provider's Service Level Agreement (SLA) may include a certain amount of scheduled downtime per year in order to perform maintenance on the systems. This scheduled downtime is often excluded from the SLA timeframe, and needs to be subtracted from the Total Time when availability is calculated. Depending on the wording of an SLA, if the availability of a system drops below that in the signed SLA, a hosting provider often will provide a partial refund for time lost. How downtime is determined changes from provider to provider, therefore reading the SLA is imperative. Not all providers release uptime statistics. Most hosting providers will guarantee at least 99.9% uptime which will allow for 43m of downtime per month, or 8h 45m of downtime per year.
Wix, Weebly, and many other website building providers offer a custom platform which can be used to create your own website. However, it doesn’t have much free space available and you don’t get any freedom. For example, Wix and Weebly offer 500MB storage each. In terms of traffic, Weebly offers unlimited bandwidth and Wix – 1GB. It’s up to you to decide which of these three options is the best free web hosting service. Nevertheless, you can clearly see that all of them are strictly limited. Forget about storing unedited pictures from your camera or video files. And forget about having a website with multiple images or products you want to share.
Many services offer a low "starting price," but require you to prepay for two or three years of service to get that price. After the promotional period, the renewal price for some services can be two, three, or even four times the initial promotional pricing. While the initial deal might be incredible, the cost of transferring your site (or paying the added fee) in a couple of years may be something to consider.