Azure in Action: Pragmatische Cloud-Lösungen mit Containern & Serverless

IDE öffnen, „File – New Project – Cloud“, OK klicken und fertig. Oder? Nun, nicht ganz. Denn egal ob AWS, GCP oder eben Azure: am Ende des Tages werden Sie sich fragen, warum, wann und wie gehe ich in die Cloud? Genau diese Fragestellungen wollen Thorsten Hans und Christian Weyer für Java-, node.js- und .NET-Entwickler in diesem Workshop beantworten. Anhand diverser Use Cases werden mögliche Wege mit, über und in Azure diskutiert. Was bedeuten Architekturansätze wie Cloud-Native Microservices und Serverless Microservices? Wie gehe ich bei Brownfield-Projekten vor und wie kann ich Greenfield-Lösungen effizient in Azure realisieren? Wo liegen Unterschiede und Benefits von datengetriebenen und von ereignisgetriebenen Ansätzen? Wie kann ich mit dem Sammelsurium an Patterns, Technologien und Tools in Azure kosteneffektiv hantieren und dennoch flexibel sein? All dies werden wir anhand praktischer Beispiele und pragmatischer Lösungen in interaktiver Art und Weise adressieren. Sehen Sie PaaS, Web Apps, Containers, Orchestrators, Serverless, Functions & Co. mit der Azure-Cloud anhand von .NET-Demos in Action.

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1. Azure in Action: Pragmatische Cloud-Lösungen mit Containern & Serverless Christian Weyer @christianweyer CTO Thorsten Hans @ThorstenHans Consultant
2. 2 § Co-Founder & CTO at Thinktecture AG § Personal focus on § Mobile & web-based application architectures § Pragmatic end-to-end solutions § Cloud-native & serverless architectures § Independent Microsoft Regional Director § Microsoft MVP for Visual Studio Tools & Development ASPInsider, AzureInsider § Google GDE for Web Technologies § christian.weyer@thinktecture.com § @christianweyer Christian Weyer Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
3. § Consultant at Thinktecture AG § Personal focus on § Container technologies § Cloud-native & Serverless architectures § Infrastructure-as-Code § Microsoft MVP for Visual Studio Tools & Development § thorsten.hans@thinktecture.com @ThorstenHans § www.thinktecture.com thorsten-hans.com thns.io/slides Thorsten Hans Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 3
4. 4 Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Topics Morning Containers & Orchestrators Afternoon Serverless
5. 5 § We can choose from a continuum § VM ➔ § Containers ➔ § Orchestrators ➔ § PaaS ➔ § Serverless Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Evolution to Cloud Compute Continuum PaaS IaaS On-Premises Serverless
6. 6 Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless IaaS
7. 7 The other Cloud Azure Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
8. 8 § Why Azure? § Look beyond one’s own nose § Microsoft has always been strong in the enterprise § It is no longer “Windows Azure” § >50% of VMs running on Linux (increasing) § Strong developer tooling § VS Code, anyone? § Breadth & depth offerings § Very broad availability worldwide Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Azure Cloud https://www.cbronline.com/news/aws-results-azure
9. https://azure.microsoft.com/en-us/global-infrastructure/regions/ Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 9
10. 10 How ‘large’ is ‘small’? ‘Micro’ Services Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
11. 11 Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Bird’s-Eye-View Target Architectures HTTP API WS API Service D HTTPS HTTPS WebSocket Service A Service B Service C HTTP API
12. Single Responsibility § Focused around business domain § ‘Small’ Isolation § Well-defined technology-agnostic API § Mobility § Choice of technology Autonomy § Exclusive state (data storage) Decoupling § Asynchronous communication § Really, always? Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action (Some) Principles of Microservices 12
13. 13 Classic Microservices Containers & Orchestrators Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
14. 1. Web App for Containers 2. What is Azure Kubernetes Service 3. Azure Kubernetes Service 101 4. Integrating AKS with Azure Services Containers & Orchestrators - Talking Points Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 14
15. Containers in Azure Web App for Containers Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 15
16. A „migration“ path for building containerized apps § Well-known App Service environment § App Service Plan § Scale-in / Scale-out § Continuous Integration § Support for Windows (currently in open Preview) and Linux Containers Web App for Containers Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 16
17. Web App for Containers DEMO Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 17
18. What is AKS? Azure Kubernetes Service Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 18
19. AKS § Managed Kubernetes cluster on Azure § AKS supports § Cluster auto-scaling § GPU enabled nodes § Development Tooling Integration (aka Azure DevSpaces) § Cost efficient § you pay ONLY for your worker nodes Azure Kubernetes Services Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 19
20. Azure Kubernetes Services 1 Fully managed Kubernetes Master 2 Seamless Azure Integration 3 Simplified Cluster Operations Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 20
21. Azure Kubernetes Service AKS 101 Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 21
22. Using Azure CLI # Create a resource group az group create --name thh-demo --location westeurope --tags @{resp="THH"} # Create a Service Principal az ad sp create-for-rbac --name thh-demo-aks-sp --skip-assignment # Will print something like { "appId": "7248f250-0000-0000-0000-dbdeb8400d85", # --> identifier ($SP_ID) "displayName": "thh-demo-aks-sp", "name": "http://thh-demo-aks-sp", "password": "77851d2c-0000-0000-0000-cb3ebc97975a", # --> client secret ($SP_PWD) "tenant": "72f988bf-0000-0000-0000-2d7cd011db47“ } Prepare a new AKS Cluster Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 22
23. Using Azure CLI # Create a AKS Cluster az aks create --name thh-demo-aks --resource-group thh-demo --location westeurope --service-principal $SP_ID --client-secret $SP_PWD --node-count 3 --node-vm-size Standard_DS1_v2 --tags @{responsible=“Thorsten Hans"} Create a new AKS Cluster Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 23
24. Using Azure CLI # Scale-Out an AKS Cluster (increase Node count to 5) az aks scale --name thh-demo-aks --resource-group thh-demo --node-count 5 Scale-Out an AKS Cluster Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 24
25. Using Azure CLI # Scale-In an AKS Cluster (reduce Node count to 1) az aks scale --name thh-demo-aks --resource-group thh-demo --node-count 1 Scale-In an AKS Cluster Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 25
26. Using Azure CLI # Get current k8s version az aks get-upgrades --name thh-demo-aks --resource-group thh-demo --output table # Name ResourceGroup MasterVersion NodePoolVersion Upgrades # ------- --------------- --------------- ----------------- -------------- # thh... thh-demo 1.10.9 1.10.9 1.10.12, 1.10.13 Get AKS Cluster Upgrades Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 26
27. Using Azure CLI # Start k8s upgrade az aks upgrade --name thh-demo-aks --resource-group thh-demo --kubernetes-version 1.10.13 Upgrade an AKS Cluster Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 27
28. Azure Services Integrating AKS Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 28
29. Integrating AKS with Azure Services 1 Container Registry 2 Storage 3 Container Instances 4 Key Vault 5 Analytics Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 29
30. Consume private images § Pull Docker images from ACR § Authentication done via Service Principal § Grant Reader permissions to AKS’s underlying SP for ACR Azure Container Registry Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 30
31. Using Azure CLI # Get ACR Identifier az acr show --name thhdemo --resource-group thh --query id # --> identifier ($ACR_ID) # Create Role Assignment for SP az role assignment create --assignee $SP_ID --role Reader --scope $ACR_ID Authenticate with ACR Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 31
32. Use persistent volumes § Support for Azure Disks and Azure Files § Static consumption § Storage is attached to Cluster and app developer uses it (eg in a Pod) § Dynamic consumption § Cluster knows how to dynamically create Azure Disks or Azure Files Shares Azure Storage Account Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 32
33. Scale cluster dynamically and support hybrid workloads § Deploy Pods to ACI § Execute both Windows and Linux containers § Feels like one or more native k8s node § Implemented using Virtual Kubelet Azure Container Instances Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 33
34. Extend AKS using a virtual-kubelet # Start k8s upgrade az aks install-connector --name thh-demo-aks --resource-group thh-demo --connector-name virtual-kubelet --aci-resource-group thh-demo --service-principal $SP_ID --client-secret $SP_PWD --os-type Windows Azure Container Instances Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 34
35. Keep sensitive data secured § Consume secrets, keys and certificates from a secured resource § Final, native integration for Key Vault and competitors not yet landed in k8s § Two different integration scenarios available § Authenticate via Client-Id and –Secret from within an application component § Use AAD to generate an Pod Identity (think of MSI) § Best solution … for NOW Azure Key Vault Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 35
36. All Insights at one place § Use Application Insights to collect application logs § Use Log Insights to collect infrastructure logs § Seamless integration of Log Insights for AKS § Centralized experience in Azure Monitor Azure Monitor Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 36
37. Enable Monitoring Add-on to stream logs to Azure Monitor # Enable Monitoring Add-on on AKS az aks enable-addons --name thh-demo-aks --resource-group thh-demo --addons monitoring --workspace-resource-id $WS_R_ID Azure Log Insights Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 37
38. 38 § We can choose from a continuum § VM ➔ § Containers ➔ § Orchestrators ➔ § PaaS ➔ § Serverless Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Evolution to Cloud Compute Continuum PaaS IaaS On-Premises Serverless
39. 39 A different approach to Microservices Serverless Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
40. 40 § We strive for isolating functional services § Choice of technology, use best fitting communication means § Microservice: unit of independent deployment for a business domain-specific service § Nanoservice: like Microservice, but more focused & lightweight; can be replaced easier § Functions as the mental model § Basic idea: make things easier, get productive with business, not infrastructure Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Microservices – or rather: Nanoservices
41. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring 41
42. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring Orders Service Products Service Shipping Service AuthN Service Order Monitoring SPA Shopping Web Site (simulated by Postman) 1 - authenticate 2 - register for push 3 - send new order 5 - new order created push 6 - get updated orders 4 - processing order… 42
43. 43 Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Serverless Sweet Spot Programming Model (FaaS) § Event-driven § Stateless § Service-full Operational Model § Fully managed § Automatically scaling § Usage priced
44. 44 Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Typical Serverless attributes
45. 45 § Serverless Compute → Azure Functions § Serverless SQL Database → Azure SQL Database Serverless § Serverless NoSQL Database → Azure Cosmos DB § Serverless Storage → Azure Storage § Serverless Realtime → Azure SignalR Service § Serverless Events → Azure Event Grid § Serverless Messaging → Azure Service Bus § Serverless Workflows → Azure Logic Apps Azure Durable Functions § Serverless IoT → Azure IoT Hub § Serverless Analytics → Azure Application Insights § Serverless Containers → Azure Container Instances Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Serverless in Azure (my personal choice)
46. 46 Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action There are NO servers! https://twitter.com/jeffhollan/status/1030244102082682880
47. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring: Serverless Orders Service Products Service Shipping Service AuthN Service Order Monitoring SPA Shopping Web Site (simulated by Postman) Azure Function App – C# Azure Function App - C# Azure Function App - JS Azure Function App - Java Azure Service Bus Azure Blob Storage Azure SignalR Service Azure Table Storage Azure Cosmos DB Identity Server 47
48. 48 Azure Storage & Cosmos DB Serverless Data Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
49. 49 § Blob § Highly scalable storage for arbitrary data § Can host static websites § Integrated with Event Grid § Files: fully managed cloud file shares § Sync § SMB, HTTPS § Table § Very simple schemaless table storage § Highly scalable § Needs thorough upfront design of data structures Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Azure Storage
50. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring: Serverless Orders Service Products Service Shipping Service AuthN Service Order Monitoring SPA Shopping Web Site (simulated by Postman) Azure Function App – C# Azure Function App - C# Azure Function App - JS Azure Function App - Java Azure Service Bus Azure Blob Storage Azure SignalR Service Azure Table Storage Azure Cosmos DB Identity Server 50
51. 51 § Globally distributed, elastically scalable § Fully managed by Azure § But not yet fully automatically scaling § Pricing not (yet?) suitable for low-entry projects § Multi-model database § Key-value, document, graph § Multiple APIs § DocumentDB, with SQL & JS APIs § MongoDB API § Cassandra API § Table Storage API § Graph Database with Gremlin API Azure in Action Cosmos DB: A NoSQL Database with Many Faces Pragmatische Cloud-Lösungen mit Containern & Serverless
52. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring: Serverless Orders Service Products Service Shipping Service AuthN Service Order Monitoring SPA Shopping Web Site (simulated by Postman) Azure Function App – C# Azure Function App - C# Azure Function App - JS Azure Function App - Java Azure Service Bus Azure Blob Storage Azure SignalR Service Azure Table Storage Azure Cosmos DB Identity Server 52
53. 53 § Building event-driven architectures with Cosmos DB § Listening to Azure Cosmos DB collection for any changes § Inserts, updates, soft-deletes § Subscribe to collection changes Azure in Action Cosmos DB Change Feed Pragmatische Cloud-Lösungen mit Containern & Serverless
54. 54 Azure Functions Serverless Compute Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
55. 55 § Azure Functions: Code being triggered by an event § Basic principles enable powerful use cases § Events ➔ Triggers § Bindings § Various ways of operation § Cost-optimized, automatic scale (aka Consumption Plan) § Always-on § V2 Runtime built on .NET Core § Available for e.g. self-hosting § Local tooling & runtime available § Multiple language bindings supported Azure in Action Azure Functions: Functions-as-a-Service Pragmatische Cloud-Lösungen mit Containern & Serverless
56. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring: Serverless Orders Service Products Service Shipping Service AuthN Service Order Monitoring SPA Shopping Web Site (simulated by Postman) Azure Function App – C# Azure Function App - C# Azure Function App - JS Azure Function App - Java Azure Service Bus Azure Blob Storage Azure SignalR Service Azure Table Storage Azure Cosmos DB Identity Server 56
57. 57 § Cold vs. warm start Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Azure Functions: Activation & Scaling in Consumption Plan https://blogs.msdn.microsoft.com/appserviceteam/2018/02/07/understanding-serverless-cold-start/
58. 58 § Incoming event triggers function § Input bindings enable easy access to data from various data sources § Output bindings offer easy access to outbound data sinks Azure in Action Triggers & Bindings Pragmatische Cloud-Lösungen mit Containern & Serverless Your code logic Runtime Azure Function HTTP Trigger Storage Input Binding Push Notification Output Binding Database Output Binding Email Output Binding Example
59. 59 Azure in Action Triggers & Bindings in Code Pragmatische Cloud-Lösungen mit Containern & Serverless
60. 60 Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless https://docs.microsoft.com/en-us/azure/azure-functions/functions-triggers-bindings Triggers & Bindings
61. 61 Azure Service Bus Serverless Messaging Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
62. 62 § Asynchronous communication for decoupling Microservices § Different messaging services in Azure § Events, messages, data points § Event Grid § Primary use case: Reactive programming § Service Bus § Primary use case: Enterprise-grade messaging § Event Hubs § Primary use case: Big data streams Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Communication is key to Cloud Architectures
63. 63 § Fully-managed centralized event routing service § Simplifies development of event-based applications § Simplifies creation of serverless workflows § Supports direct event filtering using event type, prefix or suffix § Your application will only need to receive the events you care about § Same underlying model for different use-cases § System-provided events § Custom application-specific events Azure in Action Reactive Programming: Event Grid Pragmatische Cloud-Lösungen mit Containern & Serverless
64. 64 § Queues & Topics § Reliable asynchronous communication § Rich features for temporal control § Routing and filtering § Transactions § Convoys & Sessions (related messages with state) Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Service Bus: Messaging-as-a-Service
65. 65 Sender § Sender sends message to queue § Queue ACKs receipt § Receiver connects to queue & retrieves message § Receiver ACKs complete (or other action) Service Bus Queues Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless Receiver
66. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring: Serverless Orders Service Products Service Shipping Service AuthN Service Order Monitoring SPA Shopping Web Site (simulated by Postman) Azure Function App – C# Azure Function App - C# Azure Function App - JS Azure Function App - Java Azure Service Bus Azure Blob Storage Azure SignalR Service Azure Table Storage Azure Cosmos DB Identity Server 66
67. 67 § Sender only knows about Topic § Receivers only know about Subscriptions § Filters and Actions exist on Subscriptions Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Service Bus Topics & Subscriptions Type == ‘order‘ Sender type=order type=quote Topic Type == ‘quote‘ Filter Filter Subscrip- tion 1 Subscrip- tion 2
68. 68 Azure SignalR Service Serverless Realtime Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
69. 69 § Realtime messaging is a wanted feature nowadays § Dashboards and monitoring apps § Collaborative apps § Apps that require notifications § ASP.NET Core SignalR provides programming model for bi-directional ‘method invocation’ § Via WebSockets, SSE or Long Polling § Wanted: “SignalR messaging & scale-out”-as-a-Service ➔ Azure SignalR Service § Azure Functions bindings available for accessing Hubs Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Azure SignalR Service
70. Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Sample Architecture – Shopping Order Monitoring: Serverless Orders Service Products Service Shipping Service AuthN Service Order Monitoring SPA Shopping Web Site (simulated by Postman) Azure Function App – C# Azure Function App - C# Azure Function App - JS Azure Function App - Java Azure Service Bus Azure Blob Storage Azure SignalR Service Azure Table Storage Azure Cosmos DB Identity Server 70
71. Azure Functions Extensibility Custom Bindings & Triggers Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless 71
72. 72 § Connecting your own data sources and data sinks to Azure Functions § Beyond available bindings & triggers § E.g. build input binding for your own ERP system § Or… SQL Server § E.g. provide output binding for Web Push protocol (used in PWAs) Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Azure Functions Custom Bindings & Triggers
73. 73 § Custom Input and Outputs bindings possible § Must be implemented with .NET Core and C# § Can be used with other languages and runtimes § Three major parts § Attribute § One or more converters § Configuration Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Custom Bindings
74. 74 § Currently gray area: Not really supported, but possible to build § May not work in consumption plan § May not scale in consumption plan § May not work in any plan, actually… § But they work in Docker (of course) § Implement ITriggerBinding Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action Custom Triggers
75. 75 Wrapping up Serverless Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
76. Single Responsibility § Focused around business domain § ‘Small’ unit ➡ Dedicated Azure Functions App ➡ Dedicated Azure DevOps Pipeline Isolation § Choice of technology ➡ .NET, Java, node.js, Python supported § Well-defined technology-agnostic APIs ➡ HTTPS, AMQP, MQTT, custom § Mobility ➡ Portable runtime ➡ Can use Docker, k8s with Functions ➡ Easily deploy & run in Cloud Autonomy § Exclusive state (data storage) ➡ Use separate Azure Storage, Azure SQL, Azure CosmosDB instances Decoupling § Asynchronous communication ➡ Azure Service Bus with queues or topics & subscriptions Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action (Some) Principles of Microservices – with Serverless Azure 76
77. 77 § Greenfield projects (but consider cold starts) § Integration use cases - the glue § Dissecting a monolith - isolate business functionality Pragmatische Cloud-Lösungen mit Containern & Serverless Azure in Action When to use Serverless Azure
78. 78 Summary Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
79. 79 § Container technologies provide § a soft migration path to the cloud § a unified deployment model § AKS integrates perfectly with Azure Services § AKS scales dynamically depending on your needs § Serverless is just one option in the Cloud Continuum § Always think about the use cases and requirements § Serverless will be pre-dominant on the ‘server’ in a couple of years § Azure Functions is way more than just a Web API framework Summary Azure in Action Pragmatische Cloud-Lösungen mit Containern & Serverless
80. Azure in Action: Pragmatische Cloud-Lösungen mit Containern & Serverless Christian Weyer @christianweyer christian.weyer@thinktecture.com Thorsten Hans @ThorstenHans thorsten.hans@thinktecture.com https://github.com/thorstenhans/aks-demo-app https://github.com/thinktecture/serverless-microservices https://github.com/thinktecture/azure-functions-extensibility