The scale is staggering
14 years ago I was running a group at TIBCO that was bringing TIBCO to the Internet. Yahoo!Finance was built on the TIBCO pubsub infrastructure. At the time Yahoo was the biggest cloud/internet company and the finance pages were the most popular pages on the companies web site other than search. The hits were astronomical even at the time. It was the fever time in the tech internet industry and everyone was following the stocks of the new internet players. Many people including myself had written programs that leveraged Yahoo's web site as an API to build applications for stock analytics, portfolio analysis and to embed in their own websites. I know that Yahoo was getting 100 million hits to the web site a day or more but probably few of those were really applications making calls. There weren't a lot of other APIs in the Internet at that time. I would guess that there were 10^9 a billion "pseudo-API calls"/month back then. This is the kind of traffic that a small startup would get today for its API. :)
Recently I gave a talk on helping to select PaaS from among the many PaaS out there and understanding the taxonomy of PaaS or simply how to categorize them to put them in useful buckets. One person at the talk asked about use cases for PaaS. I realized I haven't blogged about the most common or interesting use cases for a PaaS's or ECOSYSTEM PAAS's.
If all the cloud terminology and cloud is confusing to you read this.
Accelerating Pace of Change,
Faster Time to Market,
PaaS Use Cases,
Reducing Costs of IT,
WSO2 Private PaaS