In the API for MongoDB, compound indexes are required if your query needs the ability to sort on multiple fields at once. Compound indexes (MongoDB server version 3.6+) You can create up to 500 single field indexes per collection. One query uses multiple single field indexes where available. You could create the same single field index on name in the Azure portal:

The following command creates an index on the field name: The sort order of the single field index does not matter. You can create indexes on any single field. MSCI Global Investable Market Indexes are constructed and maintained with the objective of reflecting the evolution of the world’s equity markets and segments on a timely basis, while remaining replicable and stable.You can't create compound indexes using the indexing policy editor in the Data Explorer. Our building block approach also enables investors to tailor the universe to their needs and incorporate asset allocation views and insights. Consequently, investors are able to segment the global investable opportunity in ways that enhance their understanding of key performance drivers. In addition to consistent selection and weighting, our methodology applies a modular approach across geographies (country, regions) and index types, such as size and sector. A building block approach that’s both flexible and adaptable With no gaps or overlaps, the consistent framework enables investors to define their equity allocations and pursue their investment goals. Using a modular approach and a transparent, rules-based methodology, we have constructed a suite of investable indexes, the ACWI IMI (PDF, 180 KB) (opens in a new tab) family, which provides extensive coverage of the global equity investment universe. A company will be classified as large, mid or small cap based primarily on its market capitalization. Our suite of large, mid and small cap indexes is designed to accurately represent and measure global equity markets as they evolve, meeting a wide range of changing investor needs within a single framework.