SSIS - Index of features

• Creating package
• Programmatic creation - https://msdn.microsoft.com/en-us/library/ms345167(v=sql.110).aspx
• Variables & Parameters
• Inbuilt System variables list -https://msdn.microsoft.com/en-us/library/ms141788(v=sql.105).aspx
• System::ExecutionInstanceGUID - The unique identified generated each time a SSIS package executed. This id can be used to correlate the operations and logs in SSIS package.
• Control flow
• If condition in package - No out of the box support. Add expression into Disabled property of task
• For loop http://www.bidn.com/blogs/TomLannen/bidn-blog/2640/ssis-for-loop-containers-part-1
• Script task
• Using variables and Parameters in C# script task.
• Event handling
• Event firing from C# script task
• Catching events in C# executor. 
• Running package
• Run the package and capture events using C# .Net.
• https://msdn.microsoft.com/en-us/library/ms136090(v=sql.105).aspx
• Run the package by passing parameter values.
• Run the package by modifying logging file path connection
• Run the package by injecting logging provider and connection manager
• https://msdn.microsoft.com/en-us/library/ms136023.aspx
• Logging
• Logging from C# script task
• https://msdn.microsoft.com/en-us/library/ms136131(v=sql.120).aspx
• Enable logging of script task log entries
• Logging into sysssislog table.
• Extending SSIS
• Custom tasks
• Developing custom task
• Deploying custom tasks into GAC.
• Developing custom UI for the task