"What Is Code?" by Paul Ford - BusinessWeek - June 11, 2015

Thanks to SAAS !

SAAS products are highly scalable

coding is fun, EASIER & powerful !

more than ever

human end-users
should always
come first !

Computers (= hardware )

programs (= software )

In order to be executable by the computer,
instructions must be passed to it in

 these 0s and 1s represent the discrete states

OFF, False, 0 Volts, no current flowing



ON, True, +Volts, the current flows

that must take the computer's core components

once charged electronically, billions of tiny transistors...

BINARY INSTRUCTIONS 

1001101001001010100

behind the various programming languages :
a common logic : algorithmics

The fizzbuzz example

0.  Enumerate numbers until a defined stopper ('N')

1.  Start by considering 'number' is equal to 1

2.  If 'number' is a multiple of 3, say Fizz

3.  If 'number' is a multiple of 5, say Buzz

4.  If 'number' is a multiple of both, say FizzBuzz

5.  Else say the current value of 'number'

6.  Increment the value of 'number' by 1

7.  Repeat until the value of 'number' is equal to 'N'

The fizzbuzz example

http://rosettacode.org/wiki/FizzBuzz

ASSEMBLY

The fizzbuzz example

http://rosettacode.org/wiki/FizzBuzz

RUBY

The fizzbuzz example

JAVA

The fizzbuzz example

JAVASCRIPT

The applications

desktop app

1.  desktop application

needs to
be installed on
the user's computer

1.  desktop application

2.  mobile application

needs to
be installed on
the user's mobile device

SENSORS

CPU (PERFORMANCe)

SHATTERED WORLD

+

- for iOS (Objective C or Swift) 
- for Android (Java)
- for Windows Phone (C#)

3 very different families of
technologies / mobile OS :

SHATTERED WORLD

3.  web application

all you need is
a web browser on
the user's computer

3.  web application

an internet connection ?

an internet connection ?

ISP = Internet Service Provider

Internet (1969 - TCP/IP)

the global system of INTERconnected computer NETworks

Vint Cerf

Bob Kahn

Internet (1969 - TCP/IP)

Vint Cerf

Bob Kahn

the global system of INTERconnected computer NETworks

TCP / IP

www (1989 - HTTP)

the (World Wide) Web

Tim Berners-Lee

Robert Cailliau

www (1989 - HTTP)

the (World Wide) Web

Web  ≠ Internet

the World Wide Web is one of the many services
relying on the Internet infrastructure

http request / http response

static website

 (aka site vitrine)

http request / http response

dynamic website

 (aka web application)

Front-end languages

back-end languages

we could program everything from scratch...

...but it's boring & non productive

So we decided to

 create re-usable blocks 

of functionalities

pre-packaged libraries

within a specific framework

up to Build anything !

It has never been so easy to make software !

human to machine communication

but also mainly 
machine to machine communication

thanks to API (application programming interfaces)

API

API

API

API

the machine does not care about the look

(color, size,...)

what a human likes to see

...only structured content

{"richestPeople":[
    {"firstName":"Bill", "lastName":"Gates", "value":"81"}, 
    {"firstName":"Carlos", "lastName":"Slim", "value":"79"},
    {"firstName":"Warren", "lastName":"Buffet", "value":"72"}
]}

what a machine likes to see

web services

more & more applications are created today
by calling the APIs of third-party web services
(Google maps, Facebook authentication,...)

web services

can be integrated into your application
by calling  and consuming their API

(application programming interface)

© Client-side APIs

web services

select the best ones
already widely tested & acclaimed
for their usability & functionality

Stripe (payment)

Olark (live chat)

MailChimp (e-mailing)

API's are eating software

Working with Developers

Get to know them

Get to know their tools

Get to know their drivers

Building things

Tinkering

technology

team

nice work environment

... stupidly well paid !

have an impact !

Get to know Where to find them

not there

here : online platforms

here : communities

here : events

Good luck !

Demographics are against you

talk if you want to convince !

" No one will steal your shitty idea "
- Adeo Ressi

prepare your elevator pitch

GET TO KNOW TO WORK TOGETHER

build trust : co-create & cooperate

delimit : expectations

if You are not technical

Don't speak technical

use a common & neutral language :

user stories

As a <role>,
I want <goal/desire>
so that <benefit>

start from the user

"Put the user in the center of your product/service
from the beginning"
- Boris Paillard, CEO Le Wagon

the user experience is key

"Plus on met de techno dans une app,
plus il faut contrebalancer avec de l'humain"
- Jean-Daniel Guyot, CEO & Co-Founder Captain Train

Evaluate : Delivery

 be Agile - why

Fact #1 : Developers are bad
at estimating work

Fact #2 : Business Owners are bad at explaining what they want

Fact #3 : We do not speak
the same language

Agile - 101

Split the work into small, user oriented tasks (User Stories)

Define time boxed
(short) iterations

End each iteration with a demo 

Learn & improve

which status for my developer ?

Co-founder, Freelancer, employee, DYI ?

technical co-founder

technical co-founder

technical co-founder

Freelancer

FREELANCEr : do you have 10+K ?

Freelancer : Delivery

FREELANCEr : Quick results

FREELANCEr : EVOLVE or CHANGE

FREELANCEr : ONE AMONG MANY

employee

employee : do you have 60+K ?

EMPLOYEE : level

EMPLOYEE : AGAINST THE CORPORATION

EMPLOYEE : AGAINST THE CORPORATION

EMPLOYEE : AGAINST THE CORPORATION

EMPLOYEE : AGAINST THE CORPORATION

startups    vs    Corporations

Advantages

(-> to be proud of) 

Disadvantages

(-> to start to tackle) 

• flat structure
• lots of responsabilities
• room for creativity

• good package
• trainings offered
• budget for new investments

• insecurity
• lack of resources

• bureaucracy
• slow decision process

EMPLOYEE : use the drives

EMPLOYEE : one single bullet

Learn & DIY

Learn & diy : experiment

Learn & diy : understand

Learn & diy : build