How to deploy web service on SharePoint site?

1. Create .asmx file and mark it as strong name.
2. Put the DLL into GAC.
3. Put .asmx file into LAYOUTS folder
4. Open the .asmx in notepad, remove the CodeBehind attribute and modify the class attributes as below
Class=", , Version=, Culture=, PublicKeyToken="
5. Run disco command from command prompt and we will get .disco and .wsdl files
6. Copy all the 3 files (asmx, .disco and .wsdl) to ISAPI folder.
7. Rename the .disco and .wsdl files to .aspx files. e.g. Rename the EMBS.disco to EBMSdisco.aspx
8. Access the url as :/_vti_bin/.asmx">http://:/_vti_bin/.asmx