Post on 22-Jan-2018
Chris Bailey @Chris__Bailey STSM, Runtime Technologies
Java, Node.js and Swift: Which, When and Why
6 1/17/17
7 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Application Tier Database Tier
8 1/17/17
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Java
JavaScript
9 1/17/17Redmonk Programming Languages Rankings
http://redmonk.com/sogrady/category/programming-languages/
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Java
JavaScript
10 1/17/17Redmonk Programming Languages Rankings
http://redmonk.com/sogrady/category/programming-languages/
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Java
JavaScript
Swi5
11 1/17/17Redmonk Programming Languages Rankings
http://redmonk.com/sogrady/category/programming-languages/
12
13
Runtime Language
14
Scripting LanguageRuntime Language
15
Scripting Language Modern Native LanguageRuntime Language
16
Type Safe Type Safe, with InferenceDynamically Typed
Scripting Language Modern Native LanguageRuntime Language
17
Type Safe Type Safe, with InferenceDynamically Typed
Scripting Language Modern Native LanguageRuntime Language
Pre-Compiled and JIT Compiled JIT Compiled Pre-Compiled
18
Type Safe Type Safe, with InferenceDynamically Typed
Garbage Collected
Scripting Language Modern Native LanguageRuntime Language
Garbage Collected Reference Counted
JIT Compiled Pre-CompiledPre-Compiled and JIT Compiled
19
Type Safe Type Safe, with InferenceDynamically Typed
Threaded Multi-CPU
Garbage Collected
Scripting Language Modern Native LanguageRuntime Language
Garbage Collected Reference Counted
Async Single CPU Async Multi-CPU
JIT Compiled Pre-CompiledPre-Compiled and JIT Compiled
20
Type Safety
Swift @ IBM
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = 5; var b = 3;
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = 5 let b = 3
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = 5; var b = 3;
add(a, b);
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = 5 let b = 3
add(a, to: b)
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = 5; var b = 3;
add(a, b);
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = 5 let b = 3
add(a, to: b)
> swiftc main.swift
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = 5; var b = 3;
add(a, b);
> node app.js
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = 5 let b = 3
add(a, to: b)
> swiftc main.swift
> main
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = 5; var b = 3;
add(a, b);
> node app.js 8
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = 5 let b = 3
add(a, to: b)
> swiftc main.swift
> main 8
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = '5'; var b = 3;
add(a, b);
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = ”5” let b = 3
add(a, to: b)
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = '5'; var b = 3;
add(a, b);
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = ”5” let b = 3
add(a, to: b)
> swiftc main.swift
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = '5'; var b = 3;
add(a, b);
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = ”5” let b = 3
add(a, to: b)
> swiftc main.swift
> Error line 6: Cannot convert value of type ‘String’ into argument of type ‘Int’
Swift Node.js
Swift @ IBM
var add = function (a, b) { console.log(a + b); }
var a = '5'; var b = 3;
add(a, b);
> node app.js
> 53
func add(_ a: Int, to b: Int) -> Void { print(a + b) }
let a = ”5” let b = 3
add(a, to: b)
> swiftc main.swift > Error line 6: Cannot convert value of type ‘String’ into argument of type ‘Int’
Swift Node.js
34
Performance
Runtime cost of dynamic typing
func add(_ a: Int, to b: Int) -> Int { return(a + b) }
Runtime cost of dynamic typing
func add(_ a: Int, to b: Int) -> Int { return(a + b) }
Runtime cost of dynamic typing
func add(_ a: Int, to b: Int) -> Int { return(a + b) }
addi
Runtime cost of dynamic typing
var add = function (a, b) { return(a + b); }
Check type of A
var add = function (a, b) { return(a + b); }
Runtime cost of dynamic typing
Check type of A
String
var add = function (a, b) { return(a + b); }
Check type of A
StringCheck type of B
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate Check type of B
String
var add = function (a, b) { return(a + b); }
Check type of A
String
Number
Concatenate Check type of B
String
Convert Number to String
var add = function (a, b) { return(a + b); }
Check type of A
String
Number
Concatenate Check type of B
String
Convert Number to String
Concatenate
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate Check type of B
String Number
Number
Convert Number to String
Concatenate
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate Check type of B
Check type of B
String Number
Number
Convert Number to String
Concatenate
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate Check type of B
Check type of B
StringString Number
Number
Convert Number to String
Concatenate
Convert Number to String
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate Check type of B
Check type of B
StringString Number
Number
Convert Number to String
Concatenate
Convert Number to String
Concatenate
var add = function (a, b) { return(a + b); }
Convert Number to String
Check type of A
StringConcatenate Check type of B
Check type of B
StringString Number
Number
Convert Number to String
Concatenate
ConcatenateNumber
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate
FloatingPoint or Normal
Check type of B
Check type of B
StringString Number
Number
Convert Number to String
Concatenate
ConcatenateNumber
Convert Number to String
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate
FloatingPoint or Normal
Float Calculation
Check type of B
Check type of B
StringString
Float
Number
Number
Convert Number to String
Concatenate
ConcatenateNumber
Convert Number to String
var add = function (a, b) { return(a + b); }
Check type of A
StringConcatenate
FloatingPoint or Normal
Normal Add InstructionFloat Calculation
Check type of B
Check type of B
StringString
Float
Number
Number
Convert Number to String
Concatenate
ConcatenateNumber
Convert Number to String
var add = function (a, b) { return(a + b); }
0
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Dur
atio
n (s
) (lo
wer
is b
ette
r)
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Performance
4
0
2
4
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http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Performance
Dur
atio
n (s
) (lo
wer
is b
ette
r)
4 4.3
0
2
4
6
8
10
12
14
16
18
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Performance
Dur
atio
n (s
) (lo
wer
is b
ette
r)
4 4.3
15.8
0
2
4
6
8
10
12
14
16
18
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Performance
Dur
atio
n (s
) (lo
wer
is b
ette
r)
0
20
40
60
80
100
120
JSONSerialization SingleQuery DataUpdates
TechEmpowerPerformance(%ageofbest- higherisbetter)
Node.js
Java
Increasing levels of I/O
58
DeveloperProductivity
0
100
200
300
400
500
600
700
800
900
1000Vo
lum
e of
Cod
e (lo
wer
is b
ette
r)
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Developer Productivity
601
0
100
200
300
400
500
600
700
800
900
1000
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Developer Productivity
Volu
me
of C
ode
(low
er is
bet
ter)
Volu
me
of C
ode
(low
er is
bet
ter)
601
950
0
100
200
300
400
500
600
700
800
900
1000
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Developer Productivity
Volu
me
of C
ode
(low
er is
bet
ter)
Volu
me
of C
ode
(low
er is
bet
ter)
601
950
413
0
100
200
300
400
500
600
700
800
900
1000
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Typed vs Untyped Developer Productivity
Volu
me
of C
ode
(low
er is
bet
ter)
Volu
me
of C
ode
(low
er is
bet
ter)
64
Memory Management
Mem
ory
Heap Size
Mem
ory
Live in-use data(Retained Set)
Heap Size
Mem
ory
Live in-use data(Retained Set)
Heap Size
Temporary Data(Garbage)
Temporary Data(Garbage)
Mem
ory
Live in-use data(Retained Set)
Heap Size
Temporary Data(Garbage)
Mem
ory
Live in-use data(Retained Set)
Heap Size
Temporary Data(Garbage)
Temporary Data(Garbage)
Mem
ory
Live in-use data(Retained Set)
Heap Size
Temporary Data(Garbage)
Temporary Data(Garbage)
40 to 60%
Mem
ory
Live in-use data(Retained Set)
Heap Size
Temporary Data(Garbage)
Temporary Data(Garbage)
40 to 60%
~2X additional memory for additional performance
0
5
10
15
20
25
30
35
ARC vs Garage Collection
Mem
ory
Usa
ge (M
B)
(low
er is
bet
ter)
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
15
0
5
10
15
20
25
30
35
ARC vs Garage Collection
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Mem
ory
Usa
ge (M
B)
(low
er is
bet
ter)
15
32.2
0
5
10
15
20
25
30
35
ARC vs Garage Collection
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Mem
ory
Usa
ge (M
B)
(low
er is
bet
ter)
15
32.2
25.3
0
5
10
15
20
25
30
35
ARC vs Garage Collection
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Mem
ory
Usa
ge (M
B)
(low
er is
bet
ter)
Cloud CostsProvider Type Memory CPUs Cost/month
Amazon EC2 Linux t2.nano 512MB 1 vCPU US$4.68
Digital Ocean Standard 512MB 1 Core Processor US$5.00
Pivotal Cloud Foundry
App Instance 512MB 4 vCPUs US$10.80
Heroku Standard 1x 512MB 1 Share US$25.00
IBM Bluemix Instant Runtimes
512MB 4 vCPUs US$24.15
Containers 512MB 4 vCPUs US$10.22
Cloud CostsProvider Type Memory CPUs Cost/month
Amazon EC2 Linux t2.nano 512MB 1 vCPU US$4.68Linux t2.micro 1GB 1 vCPU US$9.36
Digital Ocean Standard 512MB 1 Core Processor US$5.00Standard 1GB 1 Core Processor US$10.00
Pivotal Cloud Foundry
App Instance 512MB 4 vCPUs US$10.80App Instance 1GB 4 vCPUs US$21.60
Heroku Standard 1x 512MB 1 Share US$25.00Standard 2x 1GB 2 Shares US$50.00
IBM Bluemix Instant Runtimes
512MB 4 vCPUs US$24.15Instant
Runtimes1GB 4 vCPUs US$49.35
Containers 512MB 4 vCPUs US$10.22Containers 1GB 4 vCPUs US$20.59
Cloud CostsProvider Type Memory CPUs Cost/month
Amazon EC2 Linux t2.nano 512MB 1 vCPU US$4.68Linux t2.micro 1GB 1 vCPU US$9.36Linux t2.small 2GB 1 vCPU US$18.72
Digital Ocean Standard 512MB 1 Core Processor US$5.00Standard 1GB 1 Core Processor US$10.00Standard 2GB 2 Core
ProcessorsUS$20.00
Pivotal Cloud Foundry
App Instance 512MB 4 vCPUs US$10.80App Instance 1GB 4 vCPUs US$21.60App Instance 2GB 4 vCPUs US$43.20
Heroku Standard 1x 512MB 1 Share US$25.00Standard 2x 1GB 2 Shares US$50.00
IBM Bluemix Instant Runtimes
512MB 4 vCPUs US$24.15Instant
Runtimes1GB 4 vCPUs US$49.35
Containers 512MB 4 vCPUs US$10.22Containers 1GB 4 vCPUs US$20.59
Cloud CostsProvider Type Memory CPUs Cost/month
Amazon EC2 Linux t2.nano 512MB 1 vCPU US$4.68Linux t2.micro 1GB 1 vCPU US$9.36Linux t2.small 2GB 1 vCPU US$18.72
Linux t2.medium 4GB 2 vCPUs US$37.44Digital Ocean Standard 512MB 1 Core Processor US$5.00
Standard 1GB 1 Core Processor US$10.00Standard 2GB 2 Core
ProcessorsUS$20.00
Pivotal Cloud Foundry
App Instance 512MB 4 vCPUs US$10.80App Instance 1GB 4 vCPUs US$21.60App Instance 2GB 4 vCPUs US$43.20
Heroku Standard 1x 512MB 1 Share US$25.00Standard 2x 1GB 2 Shares US$50.00
IBM Bluemix Instant Runtimes
512MB 4 vCPUs US$24.15Instant
Runtimes1GB 4 vCPUs US$49.35
Containers 512MB 4 vCPUs US$10.22Containers 1GB 4 vCPUs US$20.59
80
Full Stack Development
81 1/17/17
82
Unless it is absolutely necessary to run Java in web browsers, disable it as described below, even after updating to 7u11. This will help mitigate other Java vulnerabilities that may be discovered in the future.
This and previous Java vulnerabilities have been widely targeted by attackers, and new Java vulnerabilities are likely to be discovered. To defend against this and future Java vulnerabilities, consider disabling Java in web browsers…
83
Unless it is absolutely necessary to run Java in web browsers, disable it as described below, even after updating to 7u11. This will help mitigate other Java vulnerabilities that may be discovered in the future.
This and previous Java vulnerabilities have been widely targeted by attackers, and new Java vulnerabilities are likely to be discovered. To defend against this and future Java vulnerabilities, consider disabling Java in web browsers…
84
•Reuse of code components •Write One Run Anywhere
•Sharing of data models •Less maintenance
•Server-side rendering •Pre-Initialise UI on the server •Improves first paint time •Enables search indexing
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+
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+
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+
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+
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Which, Where, When?
94
Node.js SwiftJava
95
High Processing Performance
Transaction Processing Frameworks
Node.js SwiftJava
Type Safety for Calculations
96
High Processing Performance
Transaction Processing Frameworks
Node.js SwiftJava
Type Safety for Calculations
Business Logic Performance Critical
Batch Processing
97
High Processing Performance High IO Performance
Transaction Processing Frameworks
Node.js SwiftJava
Fullstack Web Development
Type Safety for Calculations Async Programming for Scale
Business Logic Performance Critical
Batch Processing
98
High Processing Performance High IO Performance
Transaction Processing Frameworks
Node.js SwiftJava
Fullstack Web Development
Type Safety for Calculations Async Programming for Scale
Business Logic Performance Critical
Batch Processing
Delivery Tier REST APIs
Enterprise Modernisation
99
High Processing Performance High IO Performance
Transaction Processing Frameworks
Node.js SwiftJava
Fullstack Web Development
Type Safety for Calculations Async Programming for Scale ?Business Logic
Performance Critical Batch Processing
Delivery Tier REST APIs
Enterprise Modernisation
100
Emerging Architectures
101 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Application Tier Database Tier
102 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Service Tier Database Tier
103 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Service Tier Database TierDelivery Tier
104 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Service Tier Hosted ServicesDelivery Tier
105 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
106 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
107 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
108 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
109 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
API Team
110 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
API Team
Web Team
Android Team
iOS Team
111
Server Side Rendering
First Paint Time
Search Engine Optimisation
112
Server Side Rendering
First Paint Time
Search Engine Optimisation
Network Payload Size
CPU Usage
Request Frequency
Battery UsageMemory Usage
113
114 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
API Team
Web Team
Android Team
iOS Team
115 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
116 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
117 1/17/17
GATEWAY
PUBLIC NETWORK CLOUD NETWORK
Client Devices Hosted ServicesDelivery Tier
ROUTING PROXY
Micro-Services
118 1/17/17
GATEWAYClient Devices Hosted Services
ROUTING PROXY
Micro-ServicesBackend For Frontend(BFF)
PUBLIC NETWORK CLOUD NETWORK
119 1/17/17
GATEWAYClient Devices Hosted Services
ROUTING PROXY
Micro-ServicesBackend For Frontend(BFF)
UI Engineering
120
How?
$ idt create
Create:
$ idt create? Select a pattern: 1. Web App2. Mobile App3. Backend for Frontend4. MicroserviceEnter a number> 3
? Select a starter:1. Basic BackendEnter a number> 1
? Select a language:1. Java - MicroProfile / Java EE2. Node3. Java - Spring Framework4. SwiftEnter a number> 2
? Enter a name for your project> MyNodeProject
? Enter a hostname for your project> NodeProject22 ? Do you want to add services to your project? [y/n]> n The project, mynodeproject, has been successfully saved into the current directory.OK
Create:
$ idt deploy -t container
Deploy:
MICROSERVICEBUILDER JENKINS
BLUEMIX DEVOPS
$ idt deploy -t containerThe container deployment image name for the deployment of this project will be:(The image will be tagged by Docker with this base name and appended with a version)registry.ng.bluemix.net/namespace/myswiftproject
? Press [Return] to accept this, or enter a new value now>
The IBM cluster name for the deployment of this project will be:mycluster
? Press [Return] to accept this, or enter a new value now> Log in to the IBM Container RegistryOKConfigure for a Bluemix deployment with cluster ‘mycluster'
Deploying to CloudOK
Deploy:
MICROSERVICEBUILDER JENKINS
BLUEMIX DEVOPS
$ idt deploy -t containerThe container deployment image name for the deployment of this project will be:(The image will be tagged by Docker with this base name and appended with a version)registry.ng.bluemix.net/namespace/myswiftproject
? Press [Return] to accept this, or enter a new value now>
The IBM cluster name for the deployment of this project will be:mycluster
? Press [Return] to accept this, or enter a new value now> Log in to the IBM Container RegistryOKConfigure for a Bluemix deployment with cluster ‘mycluster'
Deploying to CloudOK
Deploy:
Monitor:
metrics-dash
127
IBM Foundation Support for Runtimes
generator-nodeserverappmetrics monitoring
generator-swiftserverswiftmetrics monitoringjavametrics monitoring
Support: Language Runtimes
IBM Support for Runtimes
128
LoopBack
IBM Foundation Support for Runtimes
generator-nodeserverappmetrics monitoring
generator-swiftserverswiftmetrics monitoringjavametrics monitoring
IBM Support for Runtimes
IBM Advanced Support for Runtime Frameworks
Support: Web Frameworks
129
LoopBack
IBM Foundation Support for Runtimes
IBM Advanced Support for Runtime Frameworks
generator-nodeserverappmetrics monitoring
generator-swiftserverswiftmetrics monitoringjavametrics monitoring
IBM Support for Runtimes
Support: Module Ecosystem
130
Questions?
IBM Cloud University 2017 | October
Please Note
IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion.
Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision.
The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract.
The development, release, and timing of any future features or functionality described for our products remains at our sole discretion.
Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will
experience will vary depending upon many factors, including considerations such as the amount of multiprogramming inthe user’s job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.
IBM Cloud University 2017 | October
Notices and disclaimersCopyright © 2017 by International Business Machines Corporation (IBM). No part of this document may be reproduced or transmitted in any form without written permission from IBM.
U.S. Government Users Restricted Rights — use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM.
Information in these presentations (including information relating to products that have not yet been announced by IBM) has been reviewed for accuracy as of the date of initial publication and could include unintentional technical or typographical errors. IBM shall have no responsibility to update this information. This document is distributed “as is” without any warranty, either express or implied. In no event shall IBM be liable for any damage arising from the use of this information, including but not limited to, loss of data, business interruption, loss of profit or loss of opportunity. IBM products and services are warranted according to the terms and conditions of the agreements under which they are provided.
IBM products are manufactured from new parts or new and used parts. In some cases, a product may not be new and may have been previously installed. Regardless, our warranty terms apply.”
Any statements regarding IBM's future direction, intent or product plans are subject to change or withdrawal without notice. Performance data contained herein was generally obtained in a controlled, isolated environments. Customer examples are presented as illustrations of how those customers have used IBM products and
the results they may have achieved. Actual performance, cost, savings or other results in other operating environments may vary.
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IBM Cloud University 2017 | October
Notices and disclaimers continued
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