Remove outdated presentation link.
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 - [Stream Processing with Apache Apex (video)](https://www.youtube.com/watch?v=1DVMSRTNdIQ) and [(slides)](http://www.slideshare.net/ApacheApex/hadoop-summit-sj-2016-next-gen-big-data-analytics-with-apache-apex) A broad overview slide deck covering topics such as windowing, static and dynamic partitioning, unification, fault tolerance, locality, monitoring, etc.
 - [Fault Tolerance and Processing Semantics (video)](https://www.youtube.com/watch?v=FCMY6Ii89Nw) and [(slides)](http://www.slideshare.net/ApacheApexOrganizer/webinar-fault-toleranceandprocessingsemantics) A webinar covering core Apache Apex features including checkpointing and fault tolerance with fast, incremental recovery via a buffer server which uses a publish-subscribe model for inter-operator data transport. A variety of failure scenarios and processing guarantees are discussed.
 - [Smart Partitioning with Apache Apex (video)](https://www.youtube.com/watch?v=kJWMajIjGG0) and [(slides)](http://www.slideshare.net/ApacheApex/smart-partitioning-with-apache-apex-webinar) Webinar covering partitioning, including unique Apex features such as elasticity with dynamic resource allocation, parallel partitions for speculative execution and processing SLA etc.
-- [Windows in Apache Apex](http://www.slideshare.net/DevendraVyavahare/windowing-in-apex) Discusses the various flavors of windows available in Apache Apex and how to configure and
-use them via callbacks. Contrasts windows with micro-batches.
 - [Real Time Stream Processing Versus Batch](http://www.slideshare.net/DevendraVyavahare/batch-processing-vs-real-time-data-processing-streaming) Slide deck compares and contrasts the needs, use cases and challenges of stream processing with those of batch processing.
 
 ### Blogs