E-Business William R. Mussatto CyberStrategies, Inc. 12/2/2000

Topics What is E-Business? E-Commerce Customer Relationship Management Supply Chain Management Business Intelligence

Defining the Problem What must businesses communicate? –Status, orders, general information, advertisement. With whom must they communicate? –Customers, internally, with other businesses. Before the Internet, how did they communicate? –Dedicated lines, VANs, ship media, phone/fax.

E-Business Definitions IBM Definition: –The transformation of key business processes through the use of Internet technologies. My Definition: –The enabling and creation of key business processes through the use of Internet technologies.

Definitions Enabling and Transforming Communications between... –businesses and customers –businesses and trading partners suppliers, partners Enabling and Transforming Exchange of Goods and Services –transactions, information

Internet Concepts and Technologies Internet -- short for Internetworking –a network of networks –TCP/IP Transmission Control Protocol / Internet Protocol –vendor independent –shared public infrastructure not owned by anyone Loosely Cooperative –best effort delivery

TCP/IP Overview TCP / IP = Transmission Control Protocol / Internet Protocol Early 1970s –ARPANET Distributed with UC Berkeley UNIX in Early 1980s Public Domain, Non-Proprietary, Open Source

OSI 7-Layer Reference Model Application Presentation Session Network Transport Data Link Physical Application Presentation Session Network Transport Data Link Physical Network Data Link Physical Router’s/Switches effect this.

TCP/IP Overview Five Layer Model Application –includes OSI Application, Presentation, and Session layers Transport (TCP / UDP) Network (IP) –datagrams / packets Data Link Physical

TCP/IP Overview Packet Switching –datagrams Nodes –hosts end-user machines clients or servers –routers connecting different networks

The “Net” Company B Company A PSI Network World Comm Network

TCP/IP Overview Connection-Oriented –TCP –reliable two-way, byte stream protocol Connectionless –UDP = User Datagram Protocol also known as the “Unreliable Datagram Protocol”

TCP/IP Overview Common Application Protocols HTTP: HyperText Transfer Protocol –the Web FTP: File Transfer Protocol –uploading and downloading files SMTP: Simple Mail Transfer Protocol – POP: Post Office Protocol –

Internet Protocols Layers

Internet Concepts and Technologies Douglas Comer’s Animations – –some topics are too detailed

The Web Some Key Acronyms HTTP: HyperText Transfer Protocol –rules for exchanging multimedia files –request / response –stateless (memoryless) workaround: cookies HTML: HyperText Markup Language –web documents XML: eXtensible Markup Language –very important for B2B communications

The Web URIs / URLs URI: Uniform Resource Identifier URL: Uniform Resource Locator –uniquely identifies resource and method to access it over the web Two Forms of URLs –absolute –relative to some known base URL

The Web URIs / URLs Absolute –http: “//” host [: port] [abs_path] – –ftp://myhost.yahoo.com/memos/memo2.doc –file://memos/memo2.doc Relative –just the [abs_path] portion

How the Web Communicates Methods –GET, HEAD must be supported –POST for sending data back to server although GET can also be used indirectly to pass parameter information back to the server Examples – productid=228

The Web Security Basic Authentication –.htaccess files (Unix) Secure Sockets Layer (SSL) –https –RSA Encryption public key / private key Patent expires shortly. –not really part of HTTP

The Web HTML Main Tags – starts HTML stream – delimits HEAD of document – title that appears at top of browser frame – delimits document BODY – Text creates a hyperlink – inserts an image into a file

Class Problem How could a realtor obtain initial authorization for a loan from a house? –Internet access is available. – Persons seeking the loan have all sufficient paperwork to prove who they are and have proper bank references. –Take about 10 minutes.