ISO/IEC 19086-2:2018/Amd 1:2023

INTERNATIONAL ISO/IEC
STANDARD 19086-2
First edition
2018-12
AMENDMENT 1
2023-01
Cloud computing — Service level
agreement (SLA) framework —
Part 2:
Metric model
AMENDMENT 1
Reference number
ISO/IEC 19086-2:2018/Amd. 1:2023(E)
© ISO/IEC 2023
ISO/IEC 19086-2:2018/Amd. 1:2023(E)
© ISO/IEC 2023
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© ISO/IEC 2023 – All rights reserved

ISO/IEC 19086-2:2018/Amd. 1:2023(E)
Foreword
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© ISO/IEC 2023 – All rights reserved

ISO/IEC 19086-2:2018/Amd. 1:2023(E)
Cloud computing — Service level agreement (SLA)
framework —
Part 2:
Metric model
AMENDMENT 1
8.1.5, second paragraph
Add a new second paragraph between the existing first and second paragraphs:
Any metric element (Metric, Expression, Rule, Parameter) may be used by more than one metric if it is
defined using a unique id within the set of metrics it is used in. Any metric elements (Metric, Expression,
Rule, Parameter) can reference other elements. Element shall be referenced by their ids. Within the
context of the referencing element, ids used shall be unique.
Table 1
Replace Table 1 with the following table:
Table 1 — Metric details
Class Name Metric
Description Information about the metric
Attribute Type Multiplicity Definition
-or-
Element
id string 1 an identifier for the metric, unique within
the context of usage of the metric
description string 0.* a description of the metric that may be pro-
vided for multiple languages.
source string 1 the individual or organization who created
the metric
scale enumeratedList 1 classification of the type of measurement
result when using the metric. The value of
scale shall be “nominal, ordinal, interval, or
ratio”. SLOs shall use either the “interval” or
“ratio” scale. SQOs shall use the “nominal”
or “ordinal” scales.
category string 0.1 a grouping of metrics related to each other
expression Expression 1 The expression of the calculation of the
metric. It shall be written using the appro-
priate id to represent an underlyingMetric,
parameter, or rule.
© ISO/IEC 2023 – All rights reserved

ISO/IEC 19086-2:2018/Amd. 1:2023(E)
TTabablele 1 1 ((ccoonnttiinnueuedd))
parameter Parameter 0.* a parameter is used to define a constant
(at runtime) needed in a metric expression
or rule. A parameter’s value is determined
before the metric is used in a measurement.
A parameter may be used by more than
one metric if it is defined using a unique id
within the set of metrics it is used in.
note string 0.* additional information about the metric
and how to use it.
rule Rule 0.* a rule is used to constrain a metric and indi-
cate possible method(s) for measurement.
underlyingMetric Metric 0.* a metr
...