[mrdrozdov]

If IBM didn't use Agile, what did they use?

The non-greedy benefit of Agile is that work and how work happens becomes more understandable in a consistent and reasonably-well studied manner.

[jhallenworld]

"Waterfall" with detailed project schedules in tools like MS-Project (which BTW, is still useful for all-process oriented projects). I'm a little confused by the article since the parts of IBM I've seen have been using Agile for years (scrums, iterations, epics/themes/stories).

[ibmthrowaway271]

I'm part of a team within IBM that's been using Agile (Scrum) for the last 6 years.

Originally it was just quite close to Waterfall dressed up as Agile but "they" (senior management) are finally getting their heads around it.

[EncaitarUK]

The article isn't talking about the teams that develop software that is sold to customers but about the internal Ops team that comes under the CIO's office.