Infrastructure as a Service (IaaS)
First of all, what is an Infrastructure as a Service (IaaS) solution? IaaS enables the customer to access directly to the infrastructure and perform some activities. The Cloud provider makes available to the client a virtual machine (or more virtual machines, if it’s a complex infrastructure) and allows billing with the pay-per-use model, according to which the customer pay only the virtual resources actually used. With IaaS, companies has the access and the control on the Cloud infrastructure. The IaaS segment is still very competitive on the current market. In the last years it has grown rapidly, from $3 billion in 2010 to $31 billion in 2018. In 2019 the share is expected to reach $40 billion.
Software as a Service (SaaS)
Software as a Service solutions instead concerning all the services which allow the software distribution via web. In that case the customers have no access nor control on the Cloud system, unlike a IaaS solution. SaaS is a turn-key solution to use software programs easily and avoid all the issue related to the IT infrastructure management. As we saw above, it is the greatest market niche among the different Cloud services available (41%). Software Cloud market has reached the value of $72,2 billion in 2018, with a growth rate of 22,7%. Gartner claims that SaaS market surpass $113.1 billion by 2021 at a compound annual growth rate of 12.6%.
