Let’s start with identifying the SEO; Search engine optimization which is simply How easy you can find your website through search engines, then it comes a lot of main factors playing a main role of enhancing the rank and search results such as: 

Site Loading Speed: 

Speed is now a landing page factor for Google Search and Ads, the average load time of a site on the first page is 1.65 seconds, which is decently fast, When real users have a slow experience on mobile, they're much less likely to find what they are looking for or purchase from you in the future. For many sites this equates to a huge missed opportunity, especially when more than half of visits are abandoned if a mobile page takes over 3 seconds to load. Speed is now used as a ranking factor for mobile searches. Users want to find answers to their questions quickly and data shows that people really care about how quickly their pages load. The Search team announced speed would be a ranking signal for desktop searches
Server Uptime: 
Server uptime is the total duration for which a server is fully functional and running. It is a metric used to denote the performance of a server. Server uptime is monitored and measured by server monitoring tools. 

An uptime check is a request sent to a resource to see if it responds. You can use uptime checks to determine the availability of the following:
•    URL
•    Kubernetes Load Balancer Service
•    VM instance
•    App Engine service
•    Amazon Web Services (AWS) load balancer
You can monitor the availability of a resource by creating an alerting policy that creates an incident if the uptime check fails. The alerting policy can be configured to notify you by email or through a different channel, and that notification can include details about the resource that failed to respond. You also have the option to observe the results of uptime checks in the Monitoring uptime-check dashboards.

Server Location:

A hosting server location does impact your website speed and SEO ranking. The further the location of your server from target users, the slower your website. Companies choose a server overseas to save costs or for better server infrastructure. Although it may seem like a good option, these benefits are short-lived.
Speed is a direct ranking factor for your website. Therefore, a hosting server location should be close to your audience for faster speed. 
SSL Certificates: 

Using SSL certificates for your websites does not drastically improve your websites' SEO rankings. Even so, they do help boost the rankings of your website. While there are quite a number of other ranking factors you need to take into consideration if you want to improve the SEO rankings of your website by a wide range; for using SSL for SEO rankings only helps the cause. Furthermore, as aforementioned, it also adds security to your website, thereby, instilling a level of faith on your website in users and improving traffic in the long run.
Conclusion: 

Moreover, a website with high load time will get a high bounce rate that affects directly on its search engine rankings. A good web host decreases a website's load time by using latest caching technologies that results in high volume of traffic. Remember, decreased load time means more web views. A website that is hosted on a bad host is destined to become a disaster and all the aforementioned reasons are enough to make the statement a bitter truth.
If your website is hosted on a shared host, pick a better hosting option or else be prepared for poor SEO rankings, sudden website crash, downtime, and greater load time.
To experience what a good hosting for SEO offers, try Cloud ways that is a managed cloud hosting platform. It optimizes your website with decreased load time, 99.9% uptime, and better SEO rankings as your website is likely to be online throughout the year.