What is Strategy, Digital, Platform & Ecosystem?

Before anyone jumps in to the latest in tech buzzword, pls. consider the following definitions and the expected Outcomes for each: 

1. Strategy = is a Promise to deliver Value. Much like an IOU paper you'd sign but not just in monetary forms but the overall promised outcome.
2. Digital = provides a way to connect spaces
3. Platform = a 'place' that unlocks value, optimize and drive efficiency
4. Ecosystem = value services outside of a defined capability boundary

Therefore, in short:

1. A Digital Strategy is a promise to deliver values by connecting spaces
2. A Digital Platform Strategy is a promise to unlock value, optimize and drive efficiency by connecting spaces.
3. A Digital Ecosystem Strategy is a promise to connect value services outside of one's current offering.

Or put in context: If someone comes to you and say, "I'd like to start a digital platform that enable temp workers and employers to not only connect with one another but also to process compensation and screening." This client probably is looking to build a Digital Platform to not only connect spaces between workers and employers but also a processing platform that automates onboarding, screening, prospecting, etc. Since its digital in nature,  the engagement can take place beyond cyberspace and include physical space and time space. Also, we need Strategy Execution as this company probably need something a little beyond a promise to deliver value but also an executable plan to deliver those values. Finally, do we need to consider Ecosystem Strategy, probably yes, given the capability limits of a single operating platform.