tame the tech(ie)s !
Anne Collet
Citizens 3.0
About US & About you
Software is at work Everywhere
Software is disrupting all industries
Software is Eating the World
Why tech startups
are so popular ?
Thanks to SAAS !
= Software as a Service
SAAS products are highly scalable
saAs products are easily Replicable
for a VARIABLE COST +/- = 0
coding is fun, EASIER & powerful !
more than ever
'cause...
human end-users
should always
come first !
The Technologies
Computers (= hardware )
are machines that
can be told what to do
programs (= software )
are written instructions that
define what we want the computer to do
In order to be executable by the computer,
instructions must be passed to it in
binary language
a sequence of 0s and 1s
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
i.e. the transistors
once charged electronically, billions of tiny transistors...
will execute the logic we want
combined on a thin film of silicon, a semiconductor material,
to form an integrated circuit (aka microchip)
BINARY INSTRUCTIONS
1001101001001010100
programming languages
first_name = gets.chomp
vs
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
web app
desktop app
mobile app
1
3
2
1. desktop application
a desktop application is
a program that runs locally on the user's computer
e.g. Microsoft Excel 2010
needs to
be installed on
the user's computer
strict hardware
requirements
(hard disk, RAM,...)
one version
for each OS
(Windows, Mac,...)
complicated
updates
no Internet connection needed to use it
often, basic
user interfaces
1. desktop application
2. mobile application
a mobile application is
a program that runs on a mobile device
and is exchanging data with a remote server via Internet
needs to
be installed on
the user's mobile device
e.g. Zoho Sheet Mobile
SENSORS
CPU (PERFORMANCe)
SHATTERED WORLD
+
- for iOS (Objective C or Swift)
- for Android (Java)
- for Windows Phone (C#)
=> 2 to 3 times the cost
of a web app !
3 very different families of
technologies / mobile OS :
SHATTERED WORLD
3. web application
a web application is
a program that runs on a remote web server
and is displayed on the user's computer's web browser
all you need is
a web browser on
the user's computer
e.g. Google Sheets
works even on users' devices with limited hardware capabilities
one single version of the app,
with continuous
development
seamless upgrade & easier maintenance
difficulty for the user to work
if bad internet connection!
more interactive, media-rich user interfaces
3. web application
an internet connection ?
wired
wired
wireless
wireless
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
accessible through a web browser
identifiable thanks to their unique URL/URI
connected together
via hyperlinks,
which allow us to surf
from one to another
a gigantic space of resources (images, HTML documents,...)
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)
on the Client-side
( = the front-end part )
Front-end languages
content
+ structure
style
dynamism
+ usability
on the server-side
( = the back-end part )
back-end languages
The lego game
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)
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
text editor
terminal
online resources
+
version control tools
ergonomic keyboard (Dvorak, Bépo,...)
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
Thank you.
See you soon !
