Please read latest article to get an idea: https://toshitimes.com/amazon-web-services-creates-templates-for-blockchain-applications/

Dear Guru,

Smart contracts by default cannot interact with the public Internet. Decentralized Applications (DApps) usually rely on oracle services to talk to a web service. The main challenge with oracles is trust. Check Oraclize (http://www.oraclize.it/), it is a "provably-honest" service which relies on TLSNotary proofs, while Town Crier (Town Crier: An Authenticated Data Feed for Smart Contracts) uses Trusted Execution Environment (TEE) (Intel SGX) to guarantee that the returned data is not tampered with.

Regards,

Elie.

If you think about the web 3.0 architecture, which will be decentralized, you must consider a closer look at IPFS (https://ipfs.io). IPFS and the Blockchain are a perfect match! You can address large amounts of data with IPFS, and place the immutable, permanent IPFS links into a blockchain transaction. This timestamps and secures your content, without having to put the data on the chain itself.

Today, there are many Dapps out there already using IPFS: civic.com everipedia.org augur.net or bit.tube . For reaching mass adoption there are some problems: e.g. high bandwith requirements for running an IPFS node, data availability or storing private data over IPFS.

For more information visit this article: https://hackernoon.com/ipfs-a-complete-analysis-of-the-distributed-web-6465ff029b9b