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services and then evaluated
policy
goals
), the service
conditional constraints tha
terms in a contract or a miti
It is possible that the op
is not the responsibility of
adaptation, a second manag
fractal design principle. In
is not fixed but itself the res
Three kinds of manage
service uses and produces
produces evaluatives. An
en
possibly assertives and pro
sensor services, aggregatio
services as specific monitor
The flexibility within th
realized in several ways th
mention two options. The
the variability transformati
evaluation. Or the policy
evaluation. An example is
level is too low, the compa
too high, the company miss
adapt if when the circumsta
value by means of a stochas
d. If the evaluation is not satisfactory (does not match
specification is adapted. The policy will usually cont
t become effective in the case of contingencies, akin
igation plan.
erational service policy has to evolve itself. However,
f the management service. If we want this type of s
gement level has to be introduced, in accordance with
that case, the Management Service specification in Fig
sult of a Management Policy enforcement process.
ement subservices can be distinguished. A
monitor
s assertives. An
evaluation
service uses assertives
nforcement
service enforces policies, using evaluations
ducing directives. Further specializations are, for instan
on services, inference services and data transformat
ring services.
e service policy that enables varying enforcements can
hat go beyond the scope of this paper. We just want
policy may consist of a fixed set of alternatives, as
ions approach [3], that are selected on the basis of
contains a parameter whose value is dependent on
“credit level” in an order processing service. If the cre
any losses because of non-payments. If the credit leve
ses sales opportunities. To find an optimal credit level
ances change the manager can (re-)calculate the parame
stic optimization algorithm.
the
tain
n to
this
self-
our
g. 4
ring
and
and
nce,
tion
n be
t to
s in
the
the
edit
el is
and
eter
Fig. 5.
Contract management cycle
According to [19], diagn
man manager to spend his
way Simons presents this i
t
cerns interactions with ser
nostic control is the “automated pilot” that allows the
time on other things, in particular interactive control. T
t is not a homogeneous group. An important subclass c
rvice stakeholders about the service requirements. Th
hu-
The
con-
hese
