What can I do to earn money, with the fleet of servers I own?

I own a lot of servers, Virtual Private Servers in specific. Those resources are being wasted. How do I put them to good use to earn a substantial amount of money?
By the way, I didn't buy any of them. Just got them as a free credit.
Please give me detailed ideas and suggestions.

P.S.: I'm a techie. To be more specific, a Python Developer, and a Linux Systems Admin.
Praneeth KarnenaAsked:
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Mal OsborneAlpha GeekCommented:
If they are free, and have a bit of CPU grunt, then maybe mine cryptocurrencies? Mining is generally done these days with ASICs or graphics cards, but can still be done on a CPU.  Probably take an awful long time to jag a Bitcoin, but there are other cryptocurrencies to look at.

Beats just sitting there doing nothing.

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Praneeth KarnenaAuthor Commented:
Yeah, I have a beast like GPUs. But strictly no mining. The hosting provider's policy.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Create a Website and hire them out...
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Create a reliable backup. Make sure you always have dependable copies of your data so you can restore your entire system or individual files.

Praneeth KarnenaAuthor Commented:
Can you give me a brief idea of how I would do that? At least some links from the internet, which you think are appropriate. Like reseller software, and more...
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Build a Website, and just hire out the server by the month as a bare metal unit.
Martyn SpencerSoftware Developer / Linux System Administrator / Managing DirectorCommented:
If you are looking for software to help you manage hosting services, you could take a look at ISPconfig. (https://www.ispconfig.org/)
Shaun VermaakTechnical Specialist/DeveloperCommented:
Install OpenStack and use a billing system to sell VM instances
David FavorLinux/LXD/WordPress/Hosting SavantCommented:
To expand on what Shaun suggested.

Start your own hosting company.

You can use OpenStack or LXD to slice of machines further.

If you have a free VPS + host a client's site for $100/month, you have infinite return.

If you host 10 sites for $100/month/VPS... well... you get the idea...
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