In terms of what many vendors call unlimited service, Web Hosting Pad's terms of service indicate that its definition of unlimited is what it calls "incremental." Basically, as you need more capability, it wants to discuss that with you, both to help you get the most out of its services, and to make sure you're using its systems without abusing them.
Cloudways is, needless to say, a web hosting service which is focused on one thing only, cloud web hosting, hence the name. They offer a fully managed cloud hosting of which all plans have one fantastic feature: pay as you go. In other words, you only pay for the resources you need and nothing else. This makes it very user-friendly, for everyone to benefit from. Being the type of a hosting provider which focuses only on managed cloud hosting platform, it makes them one of the best at what they do. If you are looking for something else, Cloudways is not the host to go with.
Many web hosting services offer so-called unlimited or unmetered service for whatever amount of bandwidth, disk storage and sites you use. It's important to understand that most terms of service actually do limit the definition of "unlimited" to what's considered reasonable use. The bottom line is simple: if you're building a pretty basic website, unlimited means you don't need to worry. But if you're trying to do something excessive (or illegal, immoral or fattening), the fine print in the terms of service will trigger, and you'll either be asked to spend more or go elsewhere.