What is your most indispensable subscription?

[tonysdg]

For example, I have subscriptions to several news sites that I consider invaluable -- LWN and the LA Times, to name a few. At one point, I considered my IEEE and ACM subscriptions as such, but now that I'm no longer in academia they seem much less important and have lapsed. And while I subscribe to several stream sites, I wouldn't consider them "indispensable". But I'm curious -- what subscriptions do people consider their most useful?

[qubex]

I’m deeply embedded in the Apple ecosystem so I’d have to venture that my iCloud subscription is the most central item to me. It hosts my main email address (that I have been using for seventeen years), backups of my iOS/iPadOS devices, synchronises my whole platform, and so forth. I’ve been relying on it on an ever-increasing capacity since it was called iTools, when I claimed my @mac.com address and used the iDisk functionality right on my mac’s desktop.