Table 2
Approaches by dimensions – main categories
Concept
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Total
Technological innovation
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
24
Barriers and challenges
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
20
IT service management
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
19
People management
X
X
X
X
X
X
X
X
X
X
10
Total criteria/article
4
3
1
2
4
4
4
3
2
3
3
4
4
3
3
4
1
3
3
1
4
3
3
4
Concept
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Total
Technological innovation
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
24
Barriers and challenges
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
20
IT service management
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
19
People management
X
X
X
X
X
X
X
X
X
X
10
Total criteria/article
4
3
1
2
4
4
4
3
2
3
3
4
4
3
3
4
1
3
3
1
4
3
3
4
Source(s):
The authors
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