Whilst Microsoft has dabbled in open-source in the past—including their open-source hosting platform CodePlex—the company's core assets continued to be proprietary and closely guarded secrets. Now, though, Microsoft seems to be embracing a new strategy of openness, releasing large parts of the .NET platform and runtime as open-source projects on GitHub. We're hopeful that this could pave the way to Linux as a hosting platform for .NET, allowing the C# language to compete alongside the current bevy of JVM-based languages.

1. A NEW WAVE OF
OPENNESS AT
T e c h R a d a r , J u n e 2 0 1 5

2. THE
CATHEDRAL
AND THE
BAZAAR(S)
• Development Methodology
• Social Movement
• Frugal innovation
2
“Linux is a
cancer.”
- Steve Ballmer

3. WHY NOW?
And when did this all start happening?
3

4. AN ABOUT
FACE?
• Cloud based services
• Customers as testers
• Developer buy in
• Competition
4
“…it (OSS) isn't
successful in
building a mass
market and
making powerful,
easy-to-use
software broadly
accessible to
consumers.”
- MS Exec, 2001

5. WHAT APPS ARE
BEING OPEN
SOURCED?
And why should we care?
5

6. MAJOR ANNOUNCEMENTS
6
Roslyn
+
Open CLR
Azure
+
Docker
.NET
Framework
TypeScript
Visual Studio
+
Git

7. DOCKER, AZURE
■ Open source engine to automate
deployment of applications inside
software containers… on Linux
■ Docker can now be integrated with
Microsoft’s Azure service
7

8. ROSLYN, OPEN CLR, .NET FRAMEWORK
• By opening up it’s
CLR and web
development
framework, MS
hopes to have
more apps that can
be developed and
run on different
platforms.
8

9. TYPESCRIPT
9

10. WHAT DOES THIS
MEAN GOING
FORWARD?
And should we be optimistic… or worried?
10

11. PARTING THOUGHTS
• Is Microsoft for real?
• Windows… open source?
11

12. 12
Treating your users as co-
developers is your least-hassle
route to rapid code improvement
and effective debugging.
- Eric Steven Raymond

13. THANK YOU
‘Wole Solana
osolana@thoughtworks.com
@wolexsho