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Instil - Why focus on cloud computing?
- 1. training@instil.co October 2019 Why focus on Cloud Computing?
- 2. © Instil Software 2018 Learning about cloud computing is hard. Intro
- 3. © Instil Software 2018 • Toasters Why the shift towards Cloud Computing?
- 4. © Instil Software 2018 During his MA in Design course Thomas decided to build a toaster from raw materials (copper, steel, plastic, mica and nickel). Thomas Thwaites
- 5. © Instil Software 2018 • It took 9 months • It cost £1187.54 • It went on fire • The original cost £3.94 • When do you buy vs when do you build your own? The result?
- 6. © Instil Software 2018 The term utility in everyday life can refer to things like: • Electricity • Gas • Phone line • Water What is a utility?
- 7. © Instil Software 2018 What about in IT systems? Electricity? Servers? Operating Systems? Networks? Application code? Utilities in IT systems
- 8. © Instil Software 2018 1990’s - Companies offering to host your servers 2000’s - Companies offering to rent you their servers 2007 - Early cloud offerings (e.g. Heroku) 2014 - Modern Cloud (AWS, GCP, Azure) History of commoditisation of IT
- 9. © Instil Software 2018 Pinpointing the value in systems
- 10. © Instil Software 2018 Cloud Computing is a key part of many successful businesses strategies. Spend your development budget on things that set you apart from your competitors. If it doesn’t differentiate you or if you don’t need any customisation - just buy it and go faster. Business Strategy
- 11. © Instil Software 2018 • Elasticity • Redundancy • Performant • Secure • Observable • Transparent costs • Blue/Green deployments All difficult problems - but they become less so when you leverage existing solutions. What about Technical Strategy?
- 12. © Instil Software 2018 Architecture Changes too
- 13. © Instil Software 2018 Often seen as competing solutions but can be complimentary. It can depend on the problem being solved. Where does container management sit in a value chain? How much control do you need over the execution environment? Containers vs Serverless
- 14. © Instil Software 2018 Containers and Serverless overview
- 15. © Instil Software 2018 More than just Lambdas
- 16. © Instil Software 2018 Without Serverless
- 17. © Instil Software 2018 With Serverless
- 18. © Instil Software 2018 Startup 5 lines of code 2 developers 0 customers 0 existing servers 0 cloud accounts £100,000 6 weeks Enterprise 1,000,000 lines of code 150 developers 100,000 daily active users 74 existing servers 0 cloud accounts £100,000 6 weeks Exercise - How would you move them to the cloud?
- 19. © Instil Software 2018 When cloud goes wrong, it goes very wrong… Equifax - 143 million people’s personal data stolen • Unpatched Apache Struts vulnerability Alteryx - 120 million people’s data stolen • Misconfigured S3 bucket War stories
- 20. © Instil Software 2018 Debugging experience is very different between a monolith app and a cloud based app. Complexity can be painful. Complexity
- 21. © Instil Software 2018 Personal Strategy
- 22. © Instil Software 2018 No idea :) Alright, deep breath: • Try and wrap your head around the key concepts (elasticity, redundancy, security, performance etc.) • Pick a vendor and get comfortable with building stuff/playing around • Clean code! This includes infrastructure as code! If you are starting out in tech today what should you learn?
- 23. © Instil Software 2018 meetup.com/devbash Where next?
Editor's Notes
- Own experiences of learning new tech - it’s hard, very easy to get lost in the details, become frustrated. Cloud especially - so many aspects, patterns, tools etc. Focussing on the “why” of it can help.
- Utility, commodity, product, custom build.
- Intro to Wardley maps Describe the valuable parts of your system by mapping out their visibility to the customer and where they sit on the evolution scale. Can let orgs discuss what direction they want to move in - e.g. would you custom build data storage for the above solution? What about the HR system for the company.
- Hard problems have been solved (to some extent) - leverage these rather than re-inventing the wheel. New ways of working can be really impactful - blue/green, canary deploys, experiments/HDD etc, If they can’t meet your needs and it is critical to your business offering by all means go custom Various different providers - all offering similar product sets but with different market share/service growth Critical thinking hat on - they can make things easier but know the difference between marketing and the reality.
- Some orgs try to “lift and shift” - throw everything into a container and call it cloud ready Sometimes you have to re-architect systems to get the most out of cloud computing - increases flexibility but adds to the upfront cost These are old design patterns! EDA’s, distributed systems etc.
- Current favourite nerdy argument in the industry A lot of bias, a lot of marketing No one size fits all…
- A Serverless solution is one that costs you nothing to run if nobody is using it
- How does the approach differ? What are the immediate, medium and short term needs of each? What advantages does the startup have over the enterprise and vice-versa?
- Note the differences - even though AWS provide S3 and secure the data centres, IAM roles are up to you! Shared responsibility model
- Need excellent tests and excellent observability.
- It keeps changing, no crystal ball Understand the concepts - what they offer and how you can implement them All of the vendors have similar offerings (conceptually) - you can then map your knowledge between them if you have to jump to another one. Making code readable, testable and clean is vital. What else makes code clean in the cloud? Obervability.