Metaverse and NFT (non-fungible token).
Facebook took a dramatic new direction, heading off into virtual reality.
The internet, which had held up remarkably well over a series of lockdowns, experienced a few wobbles.
And we learned that those chips in all our devices, which we take for granted, weren’t infinite.
Here’s our rundown of some of the biggest stories on the BBC Technology site over the past year.
January: Winter of disconnect
President Donald Trump uses his mobile phone
IMAGE SOURCE,GETTY IMAGES
Even though he lost the presidential election at the end of 2020, Donald Trump continued to make headlines into 2021.
On the 7 January, he was briefly locked out of his Twitter account after posting false claims of voter fraud. Just 12 hours later, he was allowed to tweet again. but a few days later was permanently suspended.
The tweet that led to the ban was seen as particularly inflammatory given the storming of the Capitol building just the day before.
The events acted as a wake-up call to social media networks which had previously allowed politicians to have, more or less, free rein posting online.
Facebook also chose to ban the former US president; six months on, in June, it was decided that Trump would remain barred from Facebook for two years.
During the course of the year both Facebook and Twitter adopted new rules on how to deal with the high-profile accounts of world leaders and politicians.
Of course it was not the last we heard from Mr Trump – but more on that later.
February: What’s up with WhatsApp?
WhatsApp’s plans to change its privacy policies to make it easier for people to message businesses, faced a backlash as millions downloaded apps from its competitors, worried that the plan meant large amounts of information on the messaging platform would be shared with Facebook.
Facebook insisted the changes did not mark a dramatic shift, but admitted that communication had been poor.
Privacy advocates said it merely highlighted that WhatsApp was already harvesting huge amounts of data for its parent firm.
A few days after the backlash was reported in the media, WhatsApp revealed that those who did not accept its updated terms and conditions would be unable to receive or send messages after the 15 May deadline.
March: McAfee charged
In Spring, anti-virus creator John McAfee, who has always been a controversial figure, was charged with fraud – accused of promoting crypto-currencies on Twitter in order to inflate the price.
At the time, he was already being detained in Spain on separate charges relating to tax evasion.
A few months later, a Spanish court agreed to extradite him to the US. But just a few hours later he was found dead in his cell – believed to have taken his own life.
April: Hold the chips
Employees work on the production line of silicon wafer at a factory of GalaxyCore Inc. on May 25, 2021 in Jiashan County, Jiaxing City, Zhejiang Province of China
IMAGE SOURCE,GETTY IMAGES
Computer chips plants are working flat out
It has been a year dominated by chip shortages – the result of a combination of factors, including the pandemic and the sharp increase in demand for certain goods as everyone adapted to working, learning and socialising at home.
In April, Cisco became one of the first to warn that the computer chip shortage was a problem, although its suggestion that it might last for six months proved to be rather optimistic.
Later in the year, the boss of chip firm Arm suggested that the problem could run until next Christmas.
May: return of Trump?
Trump was back in the headlines in May with news that he had launched his own communications platform which would publish content “straight from the desk” of the former US president.
Some pointed out that it seemed to be little more than a glorified 1990-style blog – and just a month later it was shut down.
Later in the year, he unveiled a slightly more sophisticated effort to exert his influence on social media, with plans to launch an app called Truth Social in 2022.
It has raised $1bn to date, but has also courted controversy and is facing an investigation from the SEC.
June: the internet under strain
In June, a major internet outage affected a number of high-profile websites including Amazon, Reddit, Twitch, the Guardian and the New York Times.
Cloud computing provider Fastly admitted responsibility. It runs what is known as an edge cloud, which is designed to speed up loading times from websites. Later it emerged that one customer changing their settings had triggered the bug.
Similar problems plagued Amazon Web Services, Akamai and Cloudflare during the year, prompting some to question the reliance on a handful of companies to keep the internet working.
July: goodbye to Jeff
One of Silicon Valley’s original innovators, Jeff Bezos, stepped down from Amazon, exactly 27 years after he founded the online retail giant. For many he was a business visionary, and the company he started bears this out – worth $1.8trn at the time of his departure.
But like all tech giants, Amazon is facing increased scrutiny, over how it treats its warehouse workers, for example, as well as questions over whether it monopolises online retail.
Mr Bezos isn’t planning to walk out of the limelight however. His latest obsession is Space – in October he and Star Trek’s original Captain Kirk, aka William Shatner, blasted into sub-orbit in his rocket, Blue Origin.
August: how to make money in the school holidays
IMAGE SOURCE,BENYAMIN AHMED
This year we learned that NFT stood for Non-Fungible Token. Less understood was what it meant – essentially a digital token that can be used as a way of paying for digital collectibles.
But for those who got it, it was a great way to make a quick buck – like 12-year-old Benyamin Ahmed, who made £290,000 from some pixelated artworks called Weird Whales that he had made during his school holidays.
Elsewhere, an NFT of an animated cat GIF sold for more than £365,000, while Jack Dorsey’s first ever tweet hit £2.5m and Tim Berners-Lee web source code NFT went for a cool $5.4m.
But the NFT craze was not without its critics: author David Gerard describes NFTS as the “new form of worthless magic bean”.
Either way, it was hard to ignore, and NFT made it into Collins dictionary of new words for 2021 – along with Metaverse.
September: Bad vibrations
Every so often a strange tale hits tech – and none was stranger than the warning that iPhone owners should be wary that powerful motorbikes could damage their camera systems.
The document, published by Apple and spotted by MacRumours, suggested that engine vibrations could harm the phones’ optical-image stabilisation or closed-loop autofocus systems.
The BBC’s retelling of the story got millions of hits.
October: the firm formerly known as Facebook
IMAGE SOURCE,GETTY IMAGES
A rebrand for Facebook attracted less attention than a few hours outage of its services
In October, there were two major Facebook stories – one of which broke all records for tech index readership. But strangely that accolade went not to the radical company rebrand to Meta, but to a story about Facebook, WhatsApp and Instagram being inaccessible for a few hours.
It was also the month that Facebook announced its new focus on the metaverse – a concept that has rapidly become one of the most hyped words of 2021, and one which Mark Zuckerberg seems to have endless enthusiasm for.
Essentially, it is a virtual reality version of the internet in which Meta, along with some other big names in tech, believes we will live, play and work at some point in the future.
Of course, the more cynical wondered if the newfound enthusiasm for the metaverse – which came with not just a company rebrand, but a plan to hire 10,000 people in the EU to build it – was a distraction from Facebook’s ongoing issues with real-world content.