As of my knowledge cutoff in September 2021, the Naruto Shippuden anime series concluded on Episode 500, titled "The Final Chapter: Naruto and Sasuke." This episode aired in Japan on March 23, 2017.
Available on:
Naruto Shippuden is available for streaming on Crunchyroll and Hulu.
However, please note that the availability of episodes and streaming rights can change over time. For the latest and most up-to-date information, I recommend checking the official websites or streaming platforms for Naruto Shippuden.