Cloud Native is about Culture, not Containers

Cloud Native is About Culture, Not Containers (how to not fail at cloud native) Austin Copenhagen Dubai London Madrid Melbourne Munich Milan New York Holly Cummins IBM Garage @holly_cummins Nice Raleigh San Francisco São Paulo Singapore Tokyo Toronto

what is cloud native? #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

Credit to @bibryam #IBM #IBMGarage @holly_cummins

(a great article, btw) #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

microservices containers dynamically orchestrated #IBM #IBMGarage @holly_cummins

; o t go #IBM e v i t a n d u o l c e h “t co mputing g n o r w s i n o i t a fo un d … .” e v i t a n d u o l abo ut c #IBMGarage @holly_cummins

; o t go #IBM e v i t a n d u o l c e h “t co mputing g n o r w s i n o i t a fo un d … .” e v i t a n d u o l abo ut c #IBMGarage Holly @holly_cummins

#IBM #IBMGarage @holly_cummins

build great products faster #IBM #IBMGarage @holly_cummins

why? #IBMGarage @holly_cummins

what problem are we trying to solve? #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

CV-driven development. #IBM #IBMGarage @holly_cummins

“my CV looks dull” is not a good reason to go cloud native #IBM #IBMGarage @holly_cummins

why cloud? #IBM #IBMGarage @holly_cummins

cost #IBM #IBMGarage @holly_cummins

el a s t i c i t y #IBM #IBMGarage @holly_cummins

spee d #IBM #IBMGarage @holly_cummins

exotic capabilities #IBM #IBMGarage @holly_cummins

why cloud native? #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

12 factors #IBM #IBMGarage @holly_cummins

12 factors #IBM how to write a cloud application so you don’t get electrocuted #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

cloud native is not a synonym for ‘microservices’ #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

if ‘cloud native’ has to be a synonym for anything, it would be ‘idempotent’ #IBM #IBMGarage @holly_cummins

if ‘cloud native’ has to be a synonym for anything, it would be ‘idempotent’ which definitely needs a synonym #IBM #IBMGarage @holly_cummins

e s a b od o g a rs are e n i a t con #IBM #IBMGarage @holly_cummins

it’s not a competition to see how many you can have #IBM e s a b od o g a rs are e n i a t con #IBMGarage @holly_cummins

you do not need intra-app http communication to be cloud native #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

complexity adds expense #IBM #IBMGarage @holly_cummins

unnecessary complexity adds unnecessary expense #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

space pencil #IBM #IBMGarage @holly_cummins

space pencil $128.89 #IBM #IBMGarage @holly_cummins

space pencil $128.89 #IBM #IBMGarage space pen @holly_cummins

space pencil $128.89 #IBM #IBMGarage space pen $2.39 @holly_cummins

space pencil $128.89 space pen $2.39 +medical bills #IBM #IBMGarage @holly_cummins

accidental complexity #IBM essential complexity #IBMGarage @holly_cummins

accidental complexity essential complexity “this will impress my boss” complexity #IBM #IBMGarage @holly_cummins

2010 the dawn of cloud native #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

behaves well on the cloud #IBM #IBMGarage @holly_cummins

behaves well on the cloud written for the cloud #IBM #IBMGarage @holly_cummins

this is all how we run our application, not what’s in it #IBM #IBMGarage @holly_cummins

speed #IBM #IBMGarage @holly_cummins

what’s the point of getting the same old stuff to market faster? #IBM #IBMGarage @holly_cummins

what’s the point of being able to respond to the market, if you don’t? #IBM #IBMGarage @holly_cummins

what’s the point of architecture that can go faster, if you don’t go faster? #IBM #IBMGarage @holly_cummins

how to fail at cloud native #IBMGarage @holly_cummins

“each of our microservices has duplicated the same object model … with twenty classes and seventy fields” #IBM #IBMGarage @holly_cummins

Microservice #IBM #IBMGarage @holly_cummins

Microservice Domain #IBM #IBMGarage @holly_cummins

“every time we change code, something breaks” #IBM #IBMGarage @holly_cummins

distributed monolith #IBM #IBMGarage @holly_cummins

cloud-native spaghetti is still spaghetti (Image: Cloudy with a Chance of Meatballs.) #IBM #IBMGarage @holly_cummins

just because a system runs across 6 containers doesn’t mean it’s decoupled #IBM #IBMGarage @holly_cummins

distributed != decoupled #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

Courtesy NASA/ JPL-Caltech #IBM #IBMGarage @holly_cummins

metric units

metric units imperial units

metric units imperial units distributing did not help

microservices need consumer-driven contract tests #IBM #IBMGarage @holly_cummins

“our tests aren’t automated” #IBM #IBMGarage @holly_cummins

“we don’t know if our code works” #IBM #IBMGarage @holly_cummins

systems will behave in unexpected ways #IBM #IBMGarage @holly_cummins

documentation can be wrong #IBM #IBMGarage @holly_cummins

dependency updates can change behaviour #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

“Had we done end-to-end testing, we believe this error would have been caught.” Arthur Stephenson Chief Investigator #IBM #IBMGarage @holly_cummins

“we can’t ship until we have more confidence in the quality” #IBM #IBMGarage @holly_cummins

microservices need automated integration tests #IBM #IBMGarage @holly_cummins

not a good CI/CD indicator a good CI/CD indicator “we don’t know when the build is broken” #IBM #IBMGarage @holly_cummins

a good build radiator #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

“oh yes, that build has been broken for a few weeks…” #IBM #IBMGarage @holly_cummins

how to brick a spaceprobe #IBM #IBMGarage @holly_cummins

“we couldn’t get the automated checks to work, so we bypassed them” #IBM #IBMGarage @holly_cummins

“we’ve scheduled the architecture board review for a month after the project ships” #IBM #IBMGarage @holly_cummins

#IBM #IBMGarage @holly_cummins

navigators warned something was wrong #IBM #IBMGarage @holly_cummins

navigators warned something was wrong they didn’t fill in the right form #IBM #IBMGarage @holly_cummins

navigators warned something was wrong they didn’t fill in the right form so nothing was done #IBM #IBMGarage @holly_cummins

does the process add value? #IBM #IBMGarage @holly_cummins

extreme programming is the right kind of rigour #IBM #IBMGarage @holly_cummins

extreme programming is the right kind of rigour test-driven development #IBM #IBMGarage @holly_cummins

extreme programming is the right kind of rigour test-driven development pair programming #IBM #IBMGarage @holly_cummins

extreme programming is the right kind of rigour test-driven development pair programming optimise for feedback #IBM #IBMGarage @holly_cummins

“but it’s in the plan” #IBM #IBMGarage @holly_cummins

“but it’s not in the plan” #IBM #IBMGarage @holly_cummins

lots of bulkheads

it was too big #IBM #IBMGarage @holly_cummins

lookouts saw the iceberg but the ship wasn’t nimble enough to avoid it #IBM #IBMGarage @holly_cummins

NASA Langley 1961 #IBM #IBMGarage @holly_cummins

IBM 7090 (large!) #IBM #IBMGarage NASA Langley 1961 @holly_cummins

door (normal-sized) #IBM IBM 7090 (large!) #IBMGarage NASA Langley 1961 @holly_cummins

plans are always wrong success is in how you respond #IBM #IBMGarage @holly_cummins

“we can’t ship until every feature is complete” #IBM #IBMGarage @holly_cummins

how not to drive a car #IBM #IBMGarage @holly_cummins

they often couldn’t see the explorer #IBM #IBMGarage @holly_cummins

feedback is good business #IBM #IBMGarage @holly_cummins

feedback is good engineering #IBM #IBMGarage @holly_cummins

an mvp hurts #IBM #IBMGarage @holly_cummins

if you’re not embarrassed by your first release it was too late #IBM #IBMGarage @holly_cummins

experiments can mean failure #IBM #IBMGarage @holly_cummins

experiments can meanfailure failure experiments mean #IBM #IBMGarage @holly_cummins

The titanic staircase and lifeboats

users will have weird behaviours #IBM #IBMGarage @holly_cummins

optimise for recovery #IBM #IBMGarage @holly_cummins

unrecoverable #IBM #IBMGarage @holly_cummins

back in ms no data loss manual intervention bricked #IBM fast, but data lost handoffs #IBMGarage @holly_cummins

business recoverability #IBM #IBMGarage @holly_cummins

remember, users will have weird behaviours #IBM #IBMGarage @holly_cummins

speed #IBM #IBMGarage @holly_cummins

slow is demoralising for teams #IBM #IBMGarage @holly_cummins

fast is good business #IBM #IBMGarage @holly_cummins

A late change in requirements is a competitive advantage. –Mary Poppendieck #IBM #IBMGarage @holly_cummins

more feedback → more accuracy #IBM #IBMGarage @holly_cummins

cloud rescued developers from tedium and toil #IBM #IBMGarage @holly_cummins

cloud native should feel fun #IBM #IBMGarage @holly_cummins

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® @holly_cummins https://www.ibm.com/legal/us/en/copytrade.shtml 101