Scaling Legacy

1. Scaling Legacy Agile Venture Milano 2020 Giulio Roggero

2. 3 dimensioni di scaling

3. Usage by a Single User Num of Customers Num of Features

4. Usage by a Single User Num of Customers Num of Features Size of Data Managed Scale your Data Strategy Scale your Team Num of Deployed Features per IterationNum of Concurrent Users Scale your Services Cloud Native Data Mesh Agile Scaling

5. Cloud Native

6. Evolutionary Microservices architectural style Polyglot to guarantee evolution Decentralized to allow scaling Evolve with the growth of business Favor reuse to reduce costs

7. Interconnected API as a Product Paradigm Ease integration to simplify projects Easy to reach to monetize data Enable b2c/b2b channels to improve partnerships “Secure by design” to reduce risks

8. Agile and DevOps to support the digital life cycle Managed Centralized Governance to control all your digital project Automate processes and accelerate development Monitor and analyze applications to improve experiences Deﬁne guidelines to guarantee quality

9. Agile Scaling

10. Less

11. Spotify Model

12. SAFe

13. Data Mesh

14. https://martinfowler.com/articles/data-monolith-to-mesh.html Zhamak Dehghani Monolithic Data Platform

15. https://martinfowler.com/articles/data-monolith-to-mesh.html Zhamak Dehghani Data Mesh

16. Cosa impedisce lo scaling?

17. Non migliorare in modo continuo

18. Immagine di Daniel Okwufulueze https://medium.com/the-andela-way/what-technical-debt-is-and-how-its-measured-ff41603005e3

19. Legacy Qualsiasi codice che è in produzione e non evolve

20. Usage by a Single User Size of Data Managed Scale your Data Strategy Data Mesh Data Chaos Num of Features Scale your Team Num of Deployed Features per Iteration Agile Scaling Silos Num of Customers Num of Concurrent Users Scale your Services Cloud Native Monolith Impediments

21. Monolith Scala tutto insieme ● Vincolato tecnologicamente nella sua evoluzione ● Rilasci complessi e lenti ● Rischi di delivery

22. Silos Project A Outsourcer PM Silos Silos Silos Silos Security Infrastructure/Architecture Business PM PM PM PM PMO

23. Data Chaos ● Responsabilità del dato poco chiara: chi è il proprietario del dato? ● Dati non consistenti e duplicati ● Assenza di chiavi di business univoche (esempio di anagrafica) ● Dati allineati non in tempo reale da ETL (giornalieri, settimanali, mensili) ● Tools di gestione eterogenei ● Difficoltà di svecchiamento dei dati non più necessari

24. Come scalare il legacy?

25. Usage by a Single User Num. of Customers Num of Features Size of Data Managed Scale your Data Strategy Scale your Team Num. of Deployed Features per IterationNum. of Concurrent Users Scale your Services Cloud Native principles Data Mesh Less (and others) Data Chaos SilosMonolith Data Streams Evolutionary Architectures Culture

26. Dev Team Dev Team Dev Team DevOps Value Stream Platform Create, Deploy and Monitor Event Based Integration LayerService Integration Layer High Performance Data Store Microservices/Miniservices APIs Channels (Mobile, Voice, IoT, Web) Legacy Applications and DBs Run and Operate

27. Culture From To Il “noi” e “loro” rallenta le decisioni e aumenta i costi. Riorganizzarsi e allinearsi con le esigenze dei clienti ﬁnali diventa più eﬃcace e riduce costi aumentando la velocità di delivery. https://www.slideshare.net/GiulioRoggero/microservices-microfrontends-and-feature-teams Sam Newman

28. Data Streams (Fast Data) data stream B2x Channels Machine Learning Analytics Business Logic Historical Reports

29. Stimulus from Data Streams Stimulus Data Stores Analytics/Machine Learning Event Based Integration LayerService Integration Layer High Performance Data Store Microservices/Miniservices APIs Channels (Mobile, Voice, IoT, Web) Legacy Applications and DBs

30. Come avviare questa evoluzione?

31. Un cambio di paradigma! L’azienda costruisce il suo business su una piattaforma digitale che sia: ● incrementale; ● evolutiva; ● governata in modo aperto e cooperativo.

32. DevOps Value Stream Platform Self-service Infrastructure Platform Self-service Data Infrastructure Self-service Microservice Ecosystem Platform Here you provide the IT capabilities to build and operate the digital business Product Product Product Product API as a ProductHere you create your digital products Mobile App Bot IoT Here you interact with your customers

33. Product A Product B Product C Product D Platforms Teams Teams Teams Teams

34. Product A Product B Product C Product D Products Governance Platforms Platform Governance Teams Teams Teams Teams

35. Product A Product B Product C Product D Products Governance Platforms Platform Governance Teams Teams Teams Teams Digital Business Architects Software Operations and Security

36. Product A Product B Product C Product D Products Governance Platforms Platform Governance Teams Teams Teams Teams Digital Business Architects Software Operations and Security Mantainers Committers Users Core Team

37. Product A Product B Product C Product D Products Governance Platforms Platform Governance Teams Teams Teams Teams Digital Business Architects Software Operations and Security Mantainers Committers Users Core Team Architects

38. Product A PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Product B PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Product C PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Product D PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Digital Business Software Operations and Security Products Governance Platforms Platform Governance Mantainers Committers Users Core Team Digital Hub Architects

39. Da Silos a Piattaforma Oggi Prodotto A Prodotto A Progetto A PO (business) SM Tech Outsourcer Arch Infra Sicurezza S S S S Passaggio a part-time delle ﬁgure rilevanti di ogni area all’interno dei team di progetto per i prodotti digitali rilevanti del 2020. Adozione di Scrum e coinvolgimento del Business Portfolio delle iniziative con progetti “tradizionali” e progetti Scrum monitorati in un sol modo (EVM) Architetture allineati con la strategia di business 6 mesi Digital Business* Architects Operations and Security Products Governance Software Part-time *invitati Project A Outsourcer PM Silos Silos Silos Silos Security Infrastructure/Architecture Business PM PM PM PM PMO

40. Product A PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Product B PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Product C PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Product D PO SM Outsourcer Arch Infra Sicurezza Area A Area B Area C Area D Digital Business Software Operations and Security Products Governance Platforms Platform Governance Mantainers Committers Users Core Team Digital Hub Architects

41. https://resources.mia-platform.eu/paper-infrastrutture-invisibili Giulio Roggero Founder & CTO Mia-Platform Partner & CS Intré Founder & Advisor Agile Reloaded