Product Performance Intelligence team is responsible for providing solid and stable solution for processing millions of products from various product sources, a.k.a. feeds, like files or other products storages. The products processing consists of correcting and adjusting product attributes, like product name or price, and further enhancing of products by creating new dynamically templated product images or even by creating dynamic videos for the products. Our engine is capable to process thousands of products every second. To be able to handle such a huge amount of data we are using speed and scalability of ElasticSearch. Service for feed processing is written in Python from where Java REST API serves the data to TypeScript + React.js combo on frontend.