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To test the HDM model and fix our problem in the expert panel use, we conducted a second round of analysis. During the second round, we divided the seven experts into two panels. Expert Panel 1 consisted of the five team members acting as the executive team, who would make pairwise comparisons in Level 1 and Level 2 of this model, while Expert Panel 2 consisted of the two external cloud migration consultants, who would make pairwise comparisons in Level 3 only.

Table 4.Level 1 comparison results.

The results of the Level 1 comparison show that Security is still the company’s top concern in migration to the cloud, with Management being of the least concern. These results correspond to those from the first round analysis. Thus, Security is indeed critical to BMF, as it is an online retail company. Security should be given the highest level of consideration when making the decision on cloud migration (see Table 4).

The Level 2 comparison results show that Scalability, Protection and Service Charge are still ranked as the top three decision criteria for this migration. These results are also consistent with those from the first round of analysis, with minor differences in weights only. Technical Migration and Business Migration are still ranked the lowest among all the criteria (see Table 5).

We could interpret the similarities in the Level 1 and Level 2 comparison results in the two rounds of analysis as that of the internal and external experts having a similar understanding of the objectives and criteria associated with cloud migration. BMF, as an online retail company, has similar concerns and issues as with any other companies from the same line of business.

Table 5.Level 2 comparison results.

Level 3 comparison results show that IaaS, with a score of 0.38, is the first choice for the cloud service that will suit the company. SaaS, with a score of 0.32, is the second choice. The differences between IaaS and SaaS are significant. IaaS is the clear winner in this round of analysis (see Table 6).

Results from both the experts are very similar to each other, where there was minimal disagreement. This makes the results of the second round analysis more convincing than those in the first round. IaaS is the definite choice of the cloud service that this company should take.

The similarities between the results from both rounds of analysis prove that our HDM model is well set up and stable. The use of expert panels in the second round of analysis is more appropriate.

Table 6.Level 3 comparison results.