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Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
SQL database in Microsoft Fabric
The following guides are available. They discuss general concepts and apply to all versions of SQL Server, unless stated otherwise in the respective guide.
- Always On availability groups troubleshooting and monitoring guide
- Deadlocks guide
- Diagnose and resolve latch contention on SQL Server
- Diagnose and resolve spinlock contention on SQL Server
- Ghost cleanup process guide
- Index architecture and design guide
- Memory management architecture guide
- Pages and extents architecture guide
- Post-migration validation and optimization guide
- Query processing architecture guide
- SQL Server I/O fundamentals
- Thread and task architecture guide
- Trace the network authentication process to the Database Engine
- Transaction locking and row versioning guide
- Transaction log architecture and management guide