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Balance of responsibility Balance of control and responsibility depends on the category of the serviceIaaS - BuildBuilding blocks, create your own solution or apps from scratch
PaaS – DeployExisting services are a starting point, with additional configuration for a custom fit
SaaS - BuyUse immediately with minimal configuration
Responsibility On-Prem
IaaS PaaS SaaS
Applications
Data
Runtime
Middleware
O/S
Virtualization
Servers
Storage
Networking
MicrosoftCustomer
Azure SQL DatabaseThe developer’s intelligent cloud database
Scaleson the fly
Learns & adapts
Works in your environment
Secures & protects
Redefines multi-tenancy
DTU ModelTIER Basic Standard Premium
Maximum storage size 2 GB 1 TB 4 TB
Maximum DTUs 5 3000 4000
Target workload Development and production
Development and production
Development and production
Uptime SLA 99.99% 99.99% 99.99%
Backup retention 7 days 35 days 35 days
CPU Low Low, Medium, High Medium, High
IO throughput Low Medium Order of magnitude higher than Standard
IO latency Higher than Premium Higher than Premium Lower than Basic and Standard
Columnstore indexing and in-memory OLTP
N/A N/A Supported
vCore ModelTIER Gen4 Gen5 Gen4 (Hyperscale or
Business Critical)Gen5 (Hyperscale or
Business Critical)
Maximum storage size 4 TB 4 TB 100/1 TB 100/4 TB
Maximum vCores 24 80 24 80
Target workload Development and production
Development and production
Development and production
Development and production
Uptime SLA 99.99% 99.99% 99.99% 99.99%
Backup retention 35 days 35 days 35 days 35 days
CPU Medium High Medium High
IO throughput Low Low Very High Highest
IO latency Low Low Low Low
Columnstore indexing and in-memory OLTP
Supported Supported N/A Supported
Hyperscale (Preview)
Rapid storage growth
Nearly instantaneous backups and fast restores
Quicker performance
Rapid scale out and scale up
Azure SQL Elastic Pools
Flexible pool of resources
Accommodating to peaks and troughs
eDTU and vCore
Based on the latest SQL engine
Msg 40515, Level 15, State 1, Line 16Reference to database and/or server name in 'SQLAzureDFTo.dbo.Customer' is not supported in this version of SQL Server.
No SSIS, SSRS or SSAS
No SQL Server Agent
Cost-effective & independently scalable
Feature comparison - https://docs.microsoft.com/en-us/azure/sql-database/sql-database-features
Elastic Queries
Elastic Job Agents
Azure Functions
Data Factory V2 SSIS Integration Runtime
Data Factory Copy Data
Power BI
Analysis Services
Near 100% Compatibility
Cross-Database Queries
No SSIS, SSRS or SSAS
SQL Server Agent
Migration tools and Database Migration Service
SQL Managed Instances
Reserved Instances and Capacity
1 and 3 year commitment, up to 72% savings
Virtual machines Compute Software
Azure SQL Database Gen 4 and 5 Single Database and Elastic Pool General Purpose and Business Critical
Azure Storage Flexibility
Large storage limits
20K IOPS
High ingress and egress limits
Unlimited blob containers, blobs, file shares, files, tables, queues, entities, and messages
Easy Access
Encrypted at rest
Managed Identity
Keys, Secrets and Certificates
Logging
Versioning
Azure DevOps Integration
https://azure.microsoft.com/en-gb/resources/samples/app-service-msi-keyvault-dotnet/