In addition to web hosting, you might offer professional web design, custom templates, installation of scripts and even search engine optimization services. What type of services would you be offering, in addition to hosting?
You've pretty much named them all, as these are the most popular when it comes to add on services. You could choose to offer paid professional webmaster services to your hosting customers which would include a maintenance plan for their website, including regular content updates.
When selling web hosting you could offer your customers additional services such as: SSL certificates, backup space, file sharing solutions, domain names or email services.
Well we have been offering backup and malware scan but guess what they are being taken as granted and nobody cares. So we just cut down additional services and started offering core web services only.
There are many additional services offered with web hosting as told above like, domains, ssl, additional backup, email hosting, etc but all these services do not have much volume.
SSL is now offered free with every hosting so paid SSL also has very little volume.
However, you can also focus on additional revenue from admin fees for custom installation of software, backup restoration charges, SSL installation, and other technical fees.
As mentioned before, there are many additional products you can add such as: SSL certificates, backup space, file sharing solutions, domain names or email services.
That being said, they are small volume and in many cases you are reselling some of these features for a low profit margin.
You can also focus on services such as web design, customer support, where you can charge extra to help and take care of putting the site together for your clients to make it more simple and easy on the client as they do not all have web building expirience.
As mentioned before, there are many additional products you can add such as: SSL certificates, backup space,domain names, i would add and website design.I think it's popular these days.