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Years ago, when you didn't want to detail how inter-networked computers connected, you drew a cloud symbol with lines going into it from the modems, terminals, PCs, ttys, minicomputers and servers.
The cloud doesn't exist as such. It's just abstracing the detail of connections.
The "cloud" is really what connects your modem to someone else's server.
The Internet using IP addresses existed long before either HTML or websites existed.
The "cloud" existed even before IP, using ttys and phone lines from 1928 and X.25 from the late 1970s, often a node was accessed via 300 baud dialup using a PAD.
Arpanet was the precusor of Bitnet, which could be accessed via X.25 and a gateway server. I did email and telex that way using CP/M in mid 1980s (IBM PCs were x3 price). Bitnet became Internet (Inter-connected networks).
Your PC may communicate with the cloud. Internet is simply the common Cloud today.
Your PC isn't the cloud. Marketing is a lie. There are just servers or clients connected by the "cloud".
So my first statement was in one sense inaccurate, but in the context of using a remote service it is more accurate.
What happens when the edge routers of your ISP or the hosting provider or remote server "warehouse" get a bad patch?
Or someone digs up a cable.
Or the billing crashes?
I'll run my stuff on my stuff. Not some random 3rd party.
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