Ballmer leaves Microsoft board

Former chief executive to keep his 4% stake in software group

Ballmer leaves Microsoft board as NBA season looms

Former chief remains largest individual shareholder

Arm chief laments lack of capital for start-ups

UK’s lack of big tech groups is due to scant later-stage funding

Apple shares close at record high

Stock ends day at $100.53 on anticipation of product launches

US investors pump funds into Europe’s digital scene

California’s blue-chip funds have also been looking across the Atlantic

App developers hope to get star struck

Celebs look to extend franchises into digital world

Chinese builder buys game-maker for $960m

Conglomerate joins others moving into middle-class entertainment

Google considers creating child accounts

Facebook also considering opening service to under 13s

US hospital group accuses Chinese hackers

Group says 4.5m patient accounts compromised

Uber hires Obama campaign mastermind

David Plouffe to join driver-hailing service as lobbyist

The glitches in government IT contracts

Raytheon award just latest in series of big project problems

Apps: Growing pains

Bigger players are now dominant and profits are squeezed

Whitehall farce on digital display

eBorders debacle exposes UK weakness for big IT projects

Next steps on more women in tech

This issue is about innovation, not about gender equality or managing to some diversity metric

More comment on business IT

Look back on the in-house columns and guest articles carried on the website this year

Raytheon’s timeline of problems

IPOs: auctions v traditions

Google’s auction 10 years ago did not start a revolution – just yet

Online ad group valued above $1bn

The pursuit of love on LinkedIn

The professional network’s dating potential has not gone unnoticed by its users

Investigators work to close Mt Gox net