For small entreprises, the offerings on virtual servers are most attractive as opposed to installing physical server. Here the focus is a virtual server (a linode from Linode.com but also called droplets in DigitalOcean), which among the many offering, current preference on this site is Ubuntu 22.04 64bit) a well-established Linux OS that is support up to April 2027 (with security updates available up to 2032). Moreover this Linux OS is well-discussed, and has many points for assistance available on the Internet for both Debian and Ubuntu (which is Debian-based). To host a mailserver as well, it is recommended to choose at least that offering with 2Gb ram ($12/mo) from Linode and DigitalOcean. Linode has a backup service for USD2.50/mo (recommended) For those, seeking to establish a website only, the minimum offerings ($5/mo) from both will be sufficient. For even modest budgets, other providers such as Racknerd.com, an adequate server can be as economical as $2/mo.
Note: Our experience with Linode has been excellent and our preferred choice. That said, DigitalOcean is similarly well-structured. Both offer an excellent set of tutorials, openly accessible all. However, if one wishes to move from one hosting service to another in the future, it may be useful to use the DNS services from the domain provider (eg. DomainPriceRight.com)
As one prepares to engage either one of these services, one will require:
1. a reliable, strong Internet service with an accessible email address.
3. the recommended open-source software as described earlier, installed and functioning. Domain Name
4. a SSH public-private key pair (using PuTTY) (Think of the analogy: padlock - as the public key and its key, its private key)
A good example of how to create the pair is found at HowtoForge.com - SSH Key Pair, using step 5 ONLY to generate the key pair. Both Linode and DigitalOcean assists one to use one's chosen public key. PuTTYgen is installed together with PuTTY PuTTY as a package. Note: A very simple or even a blank passphrase (preferred) can be used.
4. b SSH public-private key pair (using Shell Assistant) Currently there no visible tutorials. So here is one in brief (some experience using PuTTY is useful here):
4.b Step01 - Open Shell Assistant, click on the green button and enter three things: A title, your IP and the user to connect with - usually it's the user: root but it can be a non-root user, eg. 'sammy'.