Investing October 25, 2025 0 Comments

The Untold Power Play: Which Giants Are Secretly Driving Banks’ Cloud Empires—and Why It Could Make or Break Your Portfolio

Ever wondered what it feels like to bet almost everything on a cashless future, only to have the foundation of that future—Amazon’s AWS—flicker and shut down right before your eyes? I’m all in on ditching cash, swinging nearly 100% digital with my Apple Watch as my wallet’s stand-in, but let me tell you, this week’s massive AWS outage gave me one heck of a reality check. It’s like watching the magician trip on his own cape: brilliant, seamless tech one moment, and then… blackout. As a staunch advocate for the digital economy, I’ve sparred endlessly with friends over the pitfalls and perks of a cashless society. Yet, when millions found themselves locked out of online banking—Lloyds, RBS, and more—it hit me: are we ready for the risks we’re taking? Is having a backup bank account enough, or should there be a public ledger revealing who’s relying on which cloud titan? More than just inconvenience, this outage shines a ruthless spotlight on our fragile digital dependencies and the invisible web holding our money, privacy, and daily lives hostage. Buckle up—the future of finance might just need a Plan B. LEARN MORE

What caught my eye this week.

Unlike some vocal Monevator readers, I’m nearly all-in on the cashless society.

I even have a long-running email thread with a few sceptical and long-suffering friends, where I goad them with statistics about cashless shops and restaurants, and stories about homeless people taking donations via their own QR codes.

They post counterpoints, of course. Usually something about how Great Aunt Beryl can’t use a smartphone. Or how making all payments digital will only enable the surveillance state.

That’s fair. There surely are still too many Aunt Beryls around for us to go fully cashless. And though there’s nothing much I can do about it, our privacy protections are too feeble for me to be completely comfortable with the paperless spending trails our taps and swipes leave behind us. Even if “you only need to worry if you’re doing something wrong” as the complacent always say.

Okay, but what if my wrong is my own (romantic) affair or – more sympathetically – an escape fund that I’m amassing to get away from an abusive and controlling partner, rather than a matter of public safety?

I believe there are ways around these concerns, both technological and legislative. Whether we’ll see them is another matter.

But in any event I’m not sure what we can do about Amazon going down.

Unable to connect

Yes, the vulnerability that hogged the limelight this week when the hyper-scaler’s AWS cloud service went offline was a dry run of another of my pals’ concerns.

Their Doomsday version includes EMP weapons in space that knock out the payments rails, alongside anything else with an electronic pulse. For my part I contend we’d have other problems in such a scenario that a wallet with a few tenners wouldn’t solve. Not least the tills not working!

But putting that debate to one side, according to Which:

A service outage at Amazon Web Services (AWS) […] caused widespread disruption, taking down millions of major apps and websites – including HMRC, Snapchat and Duolingo.

As the world’s largest cloud computing provider, AWS underpins many online platforms through its storage and database services.

The issue has also affected some of the UK’s biggest banks under the Lloyds Banking Group umbrella, leaving many customers unable to access mobile or online banking.

You can add Royal Bank of Scotland to the list too, according to This Is Money.

Customers of the affected banks were unable to access their apps – although I presume physical credit cards continued to work.

But then I no longer even take a credit card out of the house except on special occasions, let alone cash.

Well over 95% of my spending is done via my Apple Watch. That includes just getting around the Tube (which still feels like magic).

But I admit this week’s outage gave my cashless evangelism pause.

Restore from backup

The immediate fix is to have more than one bank account – with the second bank being one that works with a different cloud provider.

From This Is Money:

The main way to protect yourself if your bank goes down in an outage is to have a second bank account with access to online banking.

Though Lloyds and the banks across its brand were down, other banks for example First Direct, Monzo, Starling and Chase were not affected.

You don’t need to keep a huge balance in it but it should have enough to cover you if you need to go to the shop and for essentials.

This is good advice, similar to why I suggest spreading your assets between different platforms in case of failure, even if you expect to ultimately be made whole again through regulatory protections.

That’s because there’s a hassle factor if all your investments are inaccessible in the meantime. Hence redundancy protects you from more than just loss.

Same with spending money, if all your money is only accessible via one bank for a time.

Registry not found

The snag: who knows which bank uses what cloud service?

Perhaps there should be a public cloud register, in the same way that we can consult a Bank of England registry to show which banks belong to the same group for FSCS purposes?

You could then pick one bank that works with Amazon, and another than runs off Google or Microsoft. (At least until they switch…)

I can’t find anything like that in existence. Just lots of stories about cloud providers winning bank business, as well as this ominous piece from a cloud trade publication from 2022:

Prudential Regulation Authority concerned over banks’ reliance on cloud

The Prudential Regulation Authority (PRA), responsible for regulating UK banks, credit unions, and insurers, plans to increase its scrutiny of major cloud computing providers.

Concerns stem from the growing reliance the banking sector has on the Big Three to maintain its systems and the threat an outage or hack could pose.

As a result, the PRA is looking into ways to access more data from Amazon, Microsoft, and Google, particularly in relation to the operation resilience of their services, the Financial Times reports.

In recent years, Amazon Web Services has struck deals with Barclays and HSBC. Meanwhile, Microsoft Azure and Google Cloud have both managed to partner with Lloyds Banking Group.

Whilst UK banks’ use of cloud computing is covered by the PRA, there are growing worries over the scale of disruption that multiple services failing in unison could cause.

Time to address those worries, I’d say. At the least with a public registry.

Of course there’s nothing in the laws of physics that says all the cloud providers can’t go down at the same time. So having two bank accounts isn’t failsafe.

Ironically, given my stance, I’ve always kept some cash hidden at home. Though that is more in case the credit card payment rails fell over for a bit – and also because some tradespeople will always prefer cash.

Sleep mode

These episodes mostly show us how reliant we are on the cloud as a society, given such services are dominated by just three companies – and hence how protections and failsafes must be a national affair as much as a personal one.

I mean, some people couldn’t even get to sleep due to the Amazon outage.

According to the Guardian:

Customers of Eight Sleep – a smart bed company that connects to the internet to control the temperature and incline of a person’s bed – found they were unable to adjust the bed or the temperature of the bed during the outage because they were unable to connect to the bed in their phone app.

That takes the old adage about having backups so you can sleep at night to another level!

Have a great weekend.

From Monevator

What to do about extreme US valuations – Monevator [Members]

The tax-free Lump Sum Allowance conundrum – Monevator

From the archive-ator: Don’t currency hedge your equity portfolio – Monevator

News

UK inflation expectedly steady at 3.8% – Sky

Highest UK government borrowing in September for five years… – BBC

…but household savings at a record £2.2 trillion, too – This Is Money

New regulations for Collective Defined Contribution (CDC) schemes – GOV.UK

Real living wage will rise to at least £13.45 an hour – MoneySavingExpert

Housing market slows on fears of higher property taxes – This Is Money

University tuition fees in England to rise annually with inflation from 2026 – BBC

Surge in savings lost to investment scams – Guardian

UK elderly population at record high – Standard

Why the ultra-rich are giving up on luxury assets [Paywall] – Economist

Yet another round of Budget speculation mini-special

Rachel Reeves said to consider raising income tax rates… – Guardian

…and NI hikes for professionals such as lawyers and accountants – BBC

Reeves looks at ‘minimum UK shareholding’ in ISA reform – MoneyWeek

Steve Webb: pension tax-free cash unlikely to be slashed – This Is Money

Products and services

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HSBC and Barclays cut mortgage rates as inflation stalls – This Is Money

Zopa’s new Biscuit account adds 4.75% easy access savings – Be Clever With Your Cash

Should you choose a bank or building society for your mortgage? – Which

Get up to £200 cashback when you open or switch to an Interactive Investor SIPP. Terms and fees apply, affiliate link. – Interactive Investor

The best inflation-beating savings rates – This Is Money

Are banking hubs the answer to disappearing branches? – Which

Get up to £100 as a welcome bonus when you open a new account with InvestEngine via our link. (Minimum deposit of £100, T&Cs apply, affiliate link. Capital at risk) – InvestEngine

Can you get a mortgage to buy a house without a job? – This Is Money

Santander: a £100 Amazon voucher and £20 cashback – Be Clever With Your Cash

Homes for sale with a grand design, in pictures – Guardian

Comment and opinion

The challenge of diversification – Verdad

Are you a cat or a dog? – 3652 Days

Nine truths about investment returns – White Coat Investor

What can Estonia’s flat-rate tax regime teach Britain? [Paywall] – Times

Reasons not to own gold – A Wealth of Common Sense

Why this retiree is spending their retirement on a cruise ship – Independent

Pay attention to the storyteller – A Teachable Moment

War and payment innovation: paper currency in Britain – The Bank of England

Can machine learning predict factor returns? [Research, nerdy] – Alpha Architect

Economic growth mini-special

Populism and economic prosperity – Mainly Macro

Britain’s consumers are now a drag on economic growth – David Smith

UK pension funds and insurers partner to ‘help drive growth’ – Yahoo Finance

To encourage growth, R&D tax relief needs a total revamp – Observer

The secrets to sustainable growth and wealth – Known Unknowns

Naughty corner: Active antics

A down-to-earth discussion about AI and investing [Podcast] – Flyover Stocks via Spotify

The hidden costs of leveraged ETFs – Basis Pointing

Why everyone is trying to sell you private assets right now [Paywall] – FT

Up as much as 1,000%, Beyond Meat is the new hot meme stock – Sherwood

It has paid to literally bet against Trump – Bloomberg

The Degenerate Economy index is up 130% – Forbes

The bond funds the pros are buying and why [Affiliate Link] – Interactive Investor

Momentum != moat – Kyle Harrison

Kindle book bargains

The Art of Uncertainty by David Spiegelhalter – £0.99 on Kindle

Narconomics: How to Run a Drug Cartel by Tom Wainwright – £0.99 on Kindle

Great Britain? by Torsten Bell – £0.99 on Kindle

Supremacy: AI, ChatGPT by Pammy Olson – £0.99 on Kindle

Or pick up one of the all-time great investing classics – Monevator shop

Environmental factors

If people knew what goes into cheap meat, the love affair would be over – Guardian

Dozens of beaches in South Wales plagued by plastic discs – BBC

Bonobos: can we save the last of the ‘hippy apes’? – Guardian

North Atlantic right whale population is slowly increasing – Guardian

Robot overlord roundup

Slop is winning – The Atlantic [h/t Abnormal Returns]

Is AI enabling a golden age of stupidity? – Guardian

OpenAI’s new browser Atlas should come with a warning sticker – Anil Dash

Google hails quantum computing breakthrough – Guardian

Study shows AI assistants misrepresent news content 45% of the time – BBC

More on the – um – courageous business models of current AI players – Ed Zitron

Was this the ‘Karpathy Moment’ for the AI industry? – Value and Opportunity

Bubble, bubble, toil and trouble – Don’t Worry about the Vase

Follow the AI debate on this thread curated by Monevator commenter Delta Hedge.

Brexit omertà breaks mini-special

BOE boss: Brexit is a negative for the economy for ‘foreseeable future’… – Sky

…Chancellor also admits that Brexit dealt long-term damage to economy – BBC

…but Telegraph’s deep dive on UK ‘losing its way’ still admits zip [Paywall] – Telegraph

Nothing else worked, so Starmer and Reeves are now telling the truth about Brexit – Guardian

Not at the dinner table

Rare earth spat shows Trump already lost his trade war with China – Wealth of Nations

Trump pardons convicted Binance founder Changpeng Zhao – CNBC

Madagascan politics – Garden of Forking Paths

The US journalists quitting rather than self-censoring – Politico

Former first lady staffers in tears, donors blush: Trump’s Mar-a-White House – The Bulwark

How dozens of Trump donors have benefited from his second term [Paywall] – FT

Off our beat

The £5.30 orange juice that tells us why supermarket prices are sky high – BBC

The hidden fatigue of switching tasks – Art of Manliness

Enshittification: yes everything online sucks says author- Ars Technica

The world of Settlers of Catan is coming to Netflix – Tudum

Why luxury travellers are paying to work for their dinner – BBC

The threat of nuclear apocalypse never went away – The Atlantic

On the edge: A week in the NHS… – Sam Freedman

…and why medical students are choosing Bulgaria over UK – BBC

Argentina could be a superpower – Uncharted Territories

And finally…

“The Story is what makes each deal unique. Understanding The Story is what gives me the edge.”
– Guy Hands, The Dealmaker: Lessons from a Life in Private Equity

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