Software-as-a-Service (SaaS) was probably the Big Data of the early-2000s - at term bounded about to describe a concept which actually had its roots going back decades.
In short, SaaS is a cover-all terms for cloud-based, on-demand services for computers and is most commonly associated with the likes of Amazon Web Services, Salesforce.com and a myriad of Google apps.
Many travel tech suppliers have got in on the act, too, including the GDSs and companies such as travel and expense firm, Concur.
But has SaaS taken off as widely as IT observers predicted?
Staff.com has pulled together an interesting infographic to outline some key data points as SaaS evolve against its packaged software counterpart.
Perhaps some will be surprised to see that SaaS still only accounts for just over 4% of sales compared to packaged software...