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.[citation needed] 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.[11] Not all providers release uptime statistics.[12] 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.

One's website is placed on the same server as many other sites, ranging from a few sites to hundreds of websites. Typically, all domains may share a common pool of server resources, such as RAM and the CPU. The features available with this type of service can be quite basic and not flexible in terms of software and updates. Resellers often sell shared web hosting and web companies often have reseller accounts to provide hosting for clients.
The company doesn't list a virtual private server offering, but it bills its Elastic Sites service as a VPS alternative, offering the ease of use of a simple shared hosting plan and the performance and scalability of a VPS. GlowHost also offers a number of different cloud hosting plans, with special attention to providing enterprise-grade services.
In the first quarter of 2015, 294 million domain names had been registered.[17] A large fraction of them are in the com TLD, which as of December 21, 2014, had 115.6 million domain names,[18] including 11.9 million online business and e-commerce sites, 4.3 million entertainment sites, 3.1 million finance related sites, and 1.8 million sports sites.[19] As of July 2012 the com TLD had more registrations than all of the ccTLDs combined.[20]

If you've ever been worried about the tremendous amount of power large data centers consume, you might want to sign up with Green Geeks. The "green" in the company's name reflects the Green Geeks' commitment to the environment. It purchases three times the energy it actually uses in wind energy credits, essentially putting energy back into the economy. The company does this through a form of renewable energy certificates, which, while a bit complicated, means that it's not just energy neutral, i's actually helping fuel the green energy economy.

3. CloudwaysCloudways, a managed cloud hosting services provider based in Malta, claims to be the best WordPress and WooCommerce hosting company.  Cloudways aims to give design agencies, ecommerce store owners, bloggers, and developers the power to set up websites and manage web apps with ease. The platform caters to the need of individuals, teams, and businesses in different verticals such as media, IT, healthcare, fashion/apparel, interactive design studios, and entertainment.Although the company doesn’t offer a variety of hosting services, its Platform-as-a-Service, cloud-based web hosting sets it apart from other hosting providers. Besides, its array of reliable features, including SSD-based hosting, pre-configured PHP-FPM, one-click backup, and PHP 7 ready servers, enable users to create better digital experiences, maximize growth, and scale operations faster. Its service is backed by 24/7 expert support, which is available via live chat and ticket.The solution combines multiple core services such as Varnish, NGINX, Apache, MySQL, and Memcached to deliver seamless experience without impacting code compatibility. It also boasts a network of 41 datacenter locations, which make it easy to provision from the industry’s leading infrastructure providers such as Google Compute Engine, Amazon Web Services, Vultr, and DigitalOcean.For WordPress users, Cloudways is not only highly reliable, fast, and secure; it is affordable as well. The solution offers diverse pricing plans, plus it comes with a free WordPress migration plugin designed to streamline migration on multiple hosting environments. Also, as a Cloudways user, you will probably find its one-click managed services to be particularly impressive. With the one-click installations, it’s a breeze to get your WordPress and WooCommerce website or online store up and running right from the Cloudways control panel, in minutes.
6. GoDaddyWith a reputation similar to HostGator, GoDaddy sets up multiple examples of how the best website hosting is supposed to function. This publicly-traded American Internet domain company went beyond HostGator’s head-spinning success and currently serves over 17 million users and supports 72 million domains all around the globe. In that aspect, GoDaddy can be considered as the world’s largest domain name hub and hosting service provider, and also praised by users for being highly secure. What makes GoDaddy unique is its focus on the corporate community – there are business-friendly .store domains that have been highly appreciated by online shoppers, as well as affordable SSL certificates that guarantee the safety of each user’s data. In a fashion reminiscent of HostGator, GoDaddy offers a hands-on website builder tool for novice users, lets owners retain control of what is happening on their websites, and comes with a 24/7/365 support and professional assistance.
7. BluehostThe third representative of the ‘web-hosting trinity,’ Bluehost also belongs to those services one could hardly dispute on any grounds. You will certainly appreciate its easy to use interface, extremely low pricing plans (featuring a free domain and site builder), and the dedicated 1-click installer for WordPress users. WordPress. org recommends Bluehost as the #1 provider for easy installation and management, and the two companies partner to provide you with the best possible hosting experience for free. The cloud solution is also surprisingly affordable, knowing that even low-tier users are provided with advanced mastery features and the expected 24/7 support for their needs. The company also offers VPS and shared hosting, dedicated services, and reseller hosting, and will help you leverage Google and Bing advertising. 
Once you decide you price range, you need to consider how long you'll need web hosting. If it's a short-term project—say, less than a month or two—you can typically receive a refund should you cancel your hosting within 60 days. Some companies offer 30-day money-back guarantees, others offer 90-day money-back guarantees. Once again, it's beneficial to do your homework.

Because web hosting services host websites belonging to their customers, online security is an important concern. When a customer agrees to use a web hosting service, they are relinquishing control of the security of their site to the company that is hosting the site. The level of security that a web hosting service offers is extremely important to a prospective customer and can be a major consideration when considering which provider a customer may choose.[13]
20. ArvixeArvixe is one of the fastest-growing hosting providers in the world established in San Luis Obsipo, CA. It offers professional Linux and ASP .NET hosting (personal, business, reseller, VPS, and dedicated servers) with unrestricted disk space and data transfer, and an unlimited number of email accounts. You get to register a domain or build a website for free, and manage online performance from one of the easiest control panels on this market. The company prides itself with 99.9% uptime, and a 24/7 customer support team, automated setup, and a 45-day money-back guarantee. You can also acquire unique services, such as Forum, vBulletin and phpBB hosting, Blog & CMS hosting (WordPress, ExpressionEngine, and Movable Type Hosting), and Social network and Community Website hosting.
Serving more than 15 million members, Bravenet provides a full-service hosting option for people looking for the complete package. In addition to a drag-and-drop site builder and unlimited storage, the Canadian company is one of the only free web hosters with an email marketing platform. Customers can also enjoy community-building features such as message boards, mailing lists, blogs, contact forms, polls, and other tools.
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