Another conversation at the start of the new year - this time in our PMO, concerning project prioritization and resource assignments. Many organizations follow a "parallel" model, launching multiple projects at any one time and working concurrently to move things forward. To be fair, this often occurs because we start work on one or two things, only to have additional worthy business requirements pop-up as time goes by. Unfortunately, we don't stop the first project or delay the second; most teams attempt (with mixed success) to keep multiple plates spinning at the same time. This certainly feels less-than-optimal; stuff gets done, but it seems to take more time than one might expect.
Here's a simplified example; say I'm working on four projects at once, but I'm spreading my effort across them all:
As this picture shows, all the projects take a year to finish; note that none of these efforts deliver any value until they're finished. Resources are dedicated to the projects using the given percentages; I'm dedicating 25% of my time to each of these efforts.
An alternative, of course, is to work on projects serially; finish the first project before you start the second, and so on ...
There are a number of significant benefits to the latter approach - benefits that are easy to put in business terms:
Yes, it's an overly simplified picture, but those are three pretty good business-oriented reasons to shift project teams to working on one thing at a time. The same logic applies to the various Agile methodologies, with short-duration, staged deliverables, shorter time-to-value, and the ability to reprioritize as you go.
I think the biggest reason why most organizations don't do it this way is the "moose on the table", the uncomfortable truth that everyone knows about but no one wants to deal with. Mode 2 is more confrontational; to start the cycle, you're going to have to tell three people (project sponsors for 1002, 1003, and 1004) that their project doesn't prioritize as high as 1001. Human nature, especially in the corporate world, leads us to avoid confrontation - but that's too bad.
... To get maximum benefit, you're going to have to disappoint the majority of your project sponsors - but only for the short term.
... The business likes to see something happening - any activity, even limited to 25% of my focus is "better than nothing" - but that's taking a very narrow focus.
When folks step back and look at the bigger picture, the business benefits of working on fewer projects at any one time jump out at you. Still, it's a tough conversation to have ...
If it was easy, you'd be doing it already, right?