There were two things: governance and security. This product helped greatly in both areas.

It is used across the entire organization, so the ROI is a hundred percent. Because if we couldn't have hosted an API gateway on some applications, that would be a failure. Now, any new application they build, any new product, can easily expose the appropriate API, making it worth the initial investment.

I cannot speak to an ROI.

We consciously decided to go with microservices to enable us to move quickly and to building the flexibility and capabilities in our applications. Whether the business is able to translate those investments into profits and returns is too early to tell.

We do see an ROI, because, in the past, we could not monetize services. Now we can sell our data. 

Not sure.

Seems good so far, as it saves a lot of time. It used to take a long time to expose services, whereas now it's just a few clicks.